Datasets:
CrowdMind
/
FineWeb-HQ-STEM

Dataset card Data Studio Files
xet
 Community
text
stringlengths
4
602k
Table of Contents What is Polymerase chain reaction (PCR)? - Polymerase chain reaction (PCR) is a widely used enzymatic process that allows scientists to replicate a specific region of DNA, resulting in the production of many copies of a particular DNA sequence. PCR combines the principles of complementary nucleic acid...
|Value of h||Units||Ref.| |Values of ħ (h-bar)||Units||Ref.| |Values of hc||Units||Ref.| |Values of ħc (h-bar)||Units||Ref.| The Planck constant, or Planck's constant, is the quantum of electromagnetic action that relates a photon's energy to its frequency. The Planck constant multiplied by a photon's frequency is equa...
Global warming and climate change are terms for the observed century-scale rise in the average temperature of the Earth's climate system and its related effects. Multiple lines of scientific evidence show that the climate system is warming. Although the increase of near-surface atmospheric temperature is the measure of...
Three times the first of three consecutive odd integers is 3 more than twice the third. What is the third integer? A system was introduced to define the numbers present from negative infinity to positive infinity. The system is known as the Number system. Number system is easily represented on a number line and Integer...
Basic Numeracy Test The numeracy test is the most basic digital aptitude test and is designed to assess the testee's ability to manipulate basic mathematical concepts without the help of a calculator. The various numerical cognition tests generally comprise the following arithmetic concepts: |Percentages||Number series...
How do you change those funny numbers and letters to something you or your computer can understand? Converting hexadecimal to binary is very easy, which is why hexadecimal has been adopted in some programming languages. Converting to decimal is a little more involved, but once you've got it it's easy to repeat for any ...
An expression which consists of constant, variables and exponent values is known as polynomial expression. The polynomial expression is combined with the addition, subtraction, and multiplication. Like 5x2 + 9x + 12 = 0; This given expression is a polynomial expression and one exponent value is present in this expressi...
When you think of copper, the penny in your pocket may come to mind; but NASA engineers are trying to save taxpayers millions of pennies by 3-D printing the first full-scale, copper rocket engine part. “Building the first full-scale, copper rocket part with additive manufacturing is a milestone for aerospace 3-D printi...
A torn (perforated) eardrum is not usually serious and often heals on its own without any complications. Complications sometimes occur such as hearing loss and infection in the middle ear. A small procedure to repair a perforated eardrum is an option if it does not heal by itself, especially if you have hearing loss. W...
In 1784, John Michell proposed that in the vicinity of compact massive objects, gravity can be strong enough that even light cannot escape. At that time, the Newtonian theory of gravitation and the so-called corpuscular theory of light were dominant. In these theories, if the escape velocity of an object exceeds the sp...
Data Types, Variables and Arithmetic Operators Let us write a simple equation in math to calculate mean of a set of numbers: a = 15, b = 35, c = 55 mean = (a+b+c) / 3 = 35 To do this simple calculation, you may be using mental math or a calculator. But if you are writing a Python program to do so, then you first have t...
What to Know About Hearing Loss Hearing is one of the five senses. It is a complex process which requires both the detection of sound and the ability to attach meaning to that sound. The ability to hear is critical to communication and navigating the world around you. The human ear is fully developed at birth, capable ...
A Turing machine is a mathematical model of computation describing an abstract machine that manipulates symbols on a strip of tape according to a table of rules. Despite the model's simplicity, it is capable of implementing any computer algorithm. The machine operates on an infinite memory tape divided into discrete ce...
The first written records of the region come from Arab traders in the 9th and 10th centuries. In medieval times, the region was dominated by the Trans-Saharan trade and was ruled by the Mali Empire. In the 16th century, the region came to be ruled by the Songhai Empire. The first Europeans to visit the Gambia River wer...
Essentially, there are five forms of chemical equations and their reactions. There are two varieties of methods that are often employed for balancing chemical equations. The trick to balancing chemical equations is to use the rules below. It’s used when the chemical equation is hard to inspect. Besides this, chemical e...
Gamma-ray bursts (GRBs), which are bright flashes of the most energetic gamma-ray radiation lasting a few milliseconds to several seconds, have been discovered by satellites orbiting the Earth. These devastating blasts take place in galaxies billions of light years away from Earth. When two neutron stars collide, a sho...
Democracy is a system of government where the citizens exercise power by voting. In a direct democracy, the citizens as a whole form a governing body and vote directly on each issue. In a representative democracy the citizens elect representatives from among themselves; these representatives meet to form a governing bo...
September 3, 2008 Scientist Locates Origin Of Cosmic Dust The origin of the microscopic meteorites that make up cosmic dust has been revealed for the first time in new research out Sept. 1, 2008. The research, published in the journal Geology, shows that some of the cosmic dust falling to Earth comes from an ancient as...
|pound-force-feet, lbf?inch, ozf?in| |In SI base units||kg?m2?s-2| In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment, moment of force, rotational force or turning effect, depending on the field of study. The concept originated with the studies by Archime...
Understanding linear equations (equations with an x term and a constant) can be daunting but this program simplifies understanding. Both from an educational ... Understanding linear equations (equations with an x term and a constant) can be daunting but this program simplifies understanding. Both from an educational st...
Using data from NASA’s Chandra X-ray Observatory, a newly published study reveals evidence that heat channeled from turbulent motions in galaxy clusters is enough to offset radiative cooling and prevent the formation of stars. The same phenomenon that causes a bumpy airplane ride, turbulence, may be the solution to a l...
CBSE Board Chemistry Syllabus for Class 11 CBSE Board Syllabus for Class 11 Chemistry Unit 1: Some Basic Concepts of Chemistry General Introduction: Importance and scope of chemistry. Historical approach to particulate nature of matter, laws of chemical combination. Dalton's atomic theory: concept of elements, atoms an...
When LIGO’s twin detectors first picked up faint wobbles in their respective, identical mirrors, the signal didn’t just provide first direct detection of gravitational waves — it also confirmed the existence of stellar binary black holes, which gave rise to the signal in the first place. Stellar binary black holes are ...
As the two-year anniversary of the Deepwater Horizon oil spill in the Gulf of Mexico approaches, a team of scientists led by Dr. Peter Roopnarine of the California Academy of Sciences has detected evidence that pollutants from the oil have entered the ecosystem's food chain. For the past two years, the team has been st...
The focal length is the basic description of a photographic lens, usually represented in millimeters. It is not the actual length of the lens, but it is a calculation of an optical distance from the point where light rays converge to form a sharp image to the digital sensor of the digital camera. The focal length of a ...
Anyone can learn math whether they're in higher math at school or just looking to brush up on the basics. After discussing ways to be a good math student, this article will teach you the basic progression of math courses and will give you the basic elements that you'll need to learn in each course. Then, the article wi...
Point Slope Functions #2 In this slope-intercept learning exercise, students find the y-intercept and graph 6 linear functions. Each function includes a chart and place to show work as students compute the y-intercept and slope of the line. 3 Views 15 Downloads New Review Point-Slope Application Problems Create a linea...
LAN (Local Area Network) refers to a group of computers interconnected into a network so that they are able to communicate, exchange information and share resources (e.g. printers, application programs, database etc). In other words, the same computer resources can be used by multiple users in the network, regardless o...
Converting hexadecimal, binary and decimal numbers. Common Core Math Vocabulary Are you as smart as a fourth grader? Test your basic Common Core Math vocabulary and find out! Addition for Kindergarten - Let's Match! Find the answer! An equation of a line and a point is given. Your job is to find a parallel line to the ...
Jasmine has taught college Mathematics and Meteorology and has a master's degree in applied mathematics and atmospheric sciences. In this lesson, we explore the idea and definition of a tangent line both visually and algebraically. After learning how to calculate a tangent line to a curve, you will find a short quiz to...
File Name: area and perimeter of rectangle and square worksheets .zip The worksheets are very varied, and include:. Each worksheet is randomly generated and thus unique. Welcome to our Area and Perimeter of Rectangle worksheets and support page. Here you will find a range of free printable worksheets which will help yo...
The astronomers of UCLA declared on September 11, 2019 that they discovered the supermassive black hole at the center of our Milky Way galaxy having… The general theory of relativity, of Albert Einstein once again confirmed. The new data were obtained from a study of light from hundreds of thousands of distant galaxies...
A stellar core is the extremely hot, dense region at the center of a star. For an ordinary main sequence star, the core region is the volume where the temperature and pressure conditions allow for energy production through thermonuclear fusion of hydrogen into helium. This energy in turn counterbalances the mass of the...
[SatNews] But the locations and identity of the natural "sinks" absorbing this carbon dioxide currently are not well understood. A NASA spacecraft designed to make precise measurements of carbon dioxide in Earth's atmosphere is at Vandenberg Air Force Base, California, to begin final preparations for launch. The Orbiti...
The special theory of relativity is an extension of classical-mechanics that describes the motion and dynamics of objects moving at significant fractions of the speed of light. In Einstein's original 1905 formulation, The postulates of Special Relativity are that The Principle of Relativity is that the laws of physics ...
The GPS project was launched in the United States in 1973 to overcome the limitations of previous navigation systems, integrating ideas from several predecessors, including classified engineering design studies from the 1960s. The U.S. Department of Defense developed the system, which originally used 24 satellites. It ...
The Curve in the Curvahedra These are Curvahedra pieces:They can hook together to make all sorts of geometric objects. For example, take three pieces and make a triangle (or something triangle like with wiggly edges) Taking a close look, each piece has five arms, and they are equally spaced around so the angle between ...
Einstein's general theory of relativity predicts that accelerating mass distributions produce gravitational radiation, analogous to electromagnetic radiation from accelerating charges. These gravitational waves (GWs) have not been directly detected to date, but are expected to open a new window to the Universe once the...
Earth Observation Satellites for Navigation Timing and Ranging (ENTR) are a vital tool for a range of applications, from military and defense to civilian navigation and communication. These satellites are designed to provide precise and accurate timing and positioning information, which is essential for a variety of ac...
meteoriteArticle Free Pass - Recovery of meteorites - Types of meteorites - Association of meteorites with asteroids - The ages of meteorites and their components - Cosmic-ray exposure ages of meteorites - Meteorites and the formation of the early solar system meteorite, any fairly small natural object from interplanet...
In probability theory and statistics, skewness is a measure of the asymmetry of the probability distribution of a real-valued random variable about its mean. The skewness value can be positive, zero, negative, or undefined. For a unimodal distribution, negative skew commonly indicates that the tail is on the left side ...
The Stamp Act of 1765 On March 22, 1765, Great Britain 's Parliament gathered and passed the Stamp Act of 1765 which was to take effect in the thirteen colonies on November 1, 1765. The Stamp Act taxed Americans directly on all materials that were used for legal purposes or commercial use and a stamp distributor would ...
UHF television broadcasting This article needs additional citations for verification. (August 2015) (Learn how and when to remove this template message) UHF television broadcasting is the use of ultra high frequency (UHF) radio for over-the-air transmission of television signals. UHF frequencies are used for both analo...
CHAPTER 05.03: NEWTON DIVIDED DIFFERENCE METHOD: Newton's Divided Difference Polynomial: Linear Interpolation: Example In this segment, we're going to take an example for the Newton's divided difference polynomial method, and we're going to take the example for linear interpolation. So how do we do linear interpolation...
This ScienceLives article was provided to LiveScience in partnership with the National Science Foundation. The sexy zip of a male hummingbird as it dives is made not by its voice, but with its special tail feathers during its courtship dance. Christopher Clark, now a postdoctoral researcher at the Peabody Museum of Nat...
Foraging is searching for wild food resources. It affects an animal's fitness because it plays an important role in an animal's ability to survive and reproduce. Foraging theory is a branch of behavioral ecology that studies the foraging behavior of animals in response to the environment where the animal lives. Behavio...
This article may be confusing or unclear to readers. In particular, the lead refers correctly to transformations of Euclidean spaces, while the sections describe only the case of Euclidean vector spaces or of spaces of coordinate vectors. The "formal definition" section does not specify which kind of objects are repres...
By the end of this lecture, the students are expected to learn,1. What is an optimization?2. Different optimization tools utilized to optimize single and multi-variable problems. Defining Optimum Design In principle, an optimum design means the best or the most suitable of all the feasible conceptualdesigns. The optimi...
Rice is not native to the Americas but was introduced to Latin America and the Caribbean by European colonizers at an early date with Spanish colonizers introducing Asian rice to Mexico in the 1520 at Veracruz and the Portuguese and their African slaves introducing it at about the same time to Colonial Brazil. Recent s...
Can a Computer Generate a Truly Random Numbers? Computers can’t generate truly random numbers in the purest sense with software alone. However, computers can generate truly random numbers with the help of natural random events. How a Computer Can Produce a Truly Random Number Although one day this may change, computer ...
Algebra 1 Quiz Game Show Solving Systems of Linear Equations in a PowerPoint Presentation This Quiz Show game, Jeopardy Style, is a great way to review a chapter. There are 25 questions and a scoreboard so you don’t have to write the score on a side board. Each page has the point value! This Quiz Show game covers all o...
Galaxies are made of stars, dust and dark matter, all held together by gravity. They come in a variety of shapes, sizes and ages, and many have black holes at their centers. Galaxies contain a different number of planets, star systems, star clusters and types of interstellar clouds. In between them is a sparse interste...
- Describe the American values that are reflected in the US Constitution. - Know what federalism means, along with separation of powers. - Explain the process of amending the Constitution and why judicial review is particularly significant. The Constitution as Reflecting American Values In the US, the one document to w...
|This article needs additional citations for verification. (April 2011)| In signal processing, oversampling is the process of sampling a signal with a sampling frequency significantly higher than the Nyquist rate. Theoretically a bandwidth-limited signal can be perfectly reconstructed if sampled above the Nyquist rate,...
Mean, Median, Mode, and Range The word “average” is a description that can mean many different things. It can describe many different measurable quantities in many different aspects of life. Some examples are: grade point average The word “average” can also be used to describe quantities that cannot be measured mathema...
A turboprop engine is a turbine engine that drives an aircraft propeller. An aircraft propeller, or airscrew, converts rotary motion from an engine or other power source, into a swirling slipstream which pushes the propeller forwards or backwards. It comprises a rotating power-driven hub, to which are attached several ...
|History and description of| |Development of vowels| |Development of consonants| Like many other languages, English has wide variation in pronunciation, both historically and from dialect to dialect. In general, however, the regional dialects of English share a largely similar (but not identical) phonological system. A...
Dec 1, 2017 - Explore Ashleigh Cork's board "Maths - Nets of a 3D Shape" on Pinterest. This page gives various images, and students have to determine whether or not they are the nets of actual polyhedron. You have to try this printable worksheet if you intend to begin right. Worksheet … The 3D shape nets worksheets inc...
The timbre of musical instruments can be considered in the light of Fourier theory to consist of multiple harmonic or inharmonic partials or overtones. Each partial is a sine wave of different frequency and amplitude that swells and decays over time due to modulation from an ADSR envelope or low frequency oscillator. A...
Key Stage 1 school lessons activities KS1 worksheets for year 1 and year 2 maths, English and ICT. Key Stage One contains learning with fun activities designed for year 1 and 2. All activities are designed for children aged between 6 and 8. All activities are created to improve child’s knowledge and intelligence. Year ...
The British Agricultural Revolution, or Second Agricultural Revolution, was an unprecedented increase in agricultural production in Britain arising from increases in labour and land productivity between the mid-17th and late 19th centuries. Agricultural output grew faster than the population over the hundred-year perio...
Change of Coordinate Systems |Change of Coordinates| Change of Coordinates - The same object, here a circle, can look completely different depending on which coordinate system is used. It is a common practice in mathematics to use different coordinate systems to solve different problems. Suppose we take a set of points...
When some voltage is induced in the primary of a transformer, a magnetic flux created in the primary is produced in the secondary due to mutual induction, which generates some voltage in the secondary. The strength of this magnetic field is created when the current increases from zero to the maximum value which is give...
Constitution of the United Kingdom |This article is part of a series on the politics and government of the United Kingdom |United Kingdom portal| The constitution of the United Kingdom is the sum of laws and principles that make up the body politic of the United Kingdom. It concerns both the relationship between the in...
Scatter plots and line graphs are the most common ways to display bivariate data (data with two variables). - A scatter plot is generally used when displaying data from two variables that may or may not be directly related, and when neither of the variables is under the direct control of the researcher. The primary fun...
Dr Harold White, a physicist at Nasa’s Johnson Space Centre, is conducting research to create a warp in space and time. These so called “warp bubbles” could eventually allow spacecraft to at speeds that appear to exceed the speed of light. Essentially the warp creates a fold in the fabric of space and time that allows ...
Factors in R programming play an integral role in data analysis, forming the foundation of categorical variables that allow statistical modeling and data visualization to be effective and meaningful. They are extensively used in data wrangling and preprocessing, making them an essential tool for any data analyst or dat...
Parasitism is a non-mutual symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other, the host. Traditionally parasite referred primarily to organisms visible to the naked eye, or macroparasites (such as helminths). Parasite now includes microparasites, which are typi...
The following is a brief overview of the extensive research done in regard to the factors leading to achievement as it relates to the current study. Research regarding intelligence, growth and fixed mindsets, motivation and mindset interventions will be explored in order to understand the issues in mindsets as they rel...
Researchers have used seismic data to look inside Mars for the first time. Since early 2019, researchers have been recording and analyzing marsquakes as part of the InSight mission. This relies on a seismometer whose data acquisition and control electronics were developed at ETH Zurich. The data that will help determin...
A transformer is a device that transfers electrical energy from one circuit to another by magnetic coupling without requiring relative motion between its parts. It usually comprises two or more coupled windings, and, in most cases, a core to concentrate magnetic flux. An alternating voltage applied to one winding creat...
“Humans have impacted the ocean in a more dramatic fashion than merely capturing fish,” explained marine ecologist Ryan Heneghan from the Queensland University of Technology. “It seems that we have broken the size spectrum – one of the largest power law distributions known in nature.” The power law can be used to descr...
SPARQL (pronounced "sparkle") is the query language for the Semantic Web. Along with RDF and OWL, it is one of the three core technologies of the Semantic Web. This lesson introduces the SPARQL query language, starting with simple queries. Future lessons will build on this material with more advanced SPARQL concepts. S...
After 20 years, NASA’s Wind spacecraft is still going strong and helping scientists understand the forces that buffet near-Earth space. The end of 2014 marks two decades of data from a NASA mission called Wind. Wind – along with 17 other missions – is part of what’s called the Heliophysics Systems Observatory, a fleet ...
Please note: this article is based on information about the previous version of the Security+ exam (SY0-401), which expired in May of 2018. For updated information, please see our up-to-date Security+ listing. Appropriate use of security controls can provide a number of behind-the-scenes security measures: deterrents, ...
Fractions and decimals represent the same thing: a part of a whole. For example, 0.25 and 1/4 both mean one-quarter or 25 percent. Converting some decimals -- such as those with more than two numbers after the decimal point -- to fractions makes it easier to visualize them. You can convert decimals to fractions quickly...
William Jones and his Circle: The Man who invented Pi In 1706 a little-known mathematics teacher named William Jones first used a symbol to represent the platonic concept of pi, an ideal that in numerical terms can be approached, but never reached. The history of the constant ratio of the circumference to the diameter ...
What are Strings? The string is any value written either in a single quote or double quote. Internally R takes single quotes as double quotes only. Want to get certified in R! Learn R from top R experts and excel in your career with Intellipaat’s R Programming certification! The quotes at the beginning and end of a str...
wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 23 people, some anonymous, worked to edit and improve it over time. wikiHow marks an article as reader-approved once it receives enough positive feedback. In this case, 91% of rea...
By the end of this section, you will be able to: - Differentiate between resistance and resistivity - Define the term conductivity - Describe the electrical component known as a resistor - State the relationship between resistance of a resistor and its length, cross-sectional area, and resistivity - State the relations...
The Thirty Years' War was a war fought primarily in Central Europe between 1618 and 1648. One of the most destructive conflicts in human history, it resulted in eight million fatalities not only from military engagements but also from violence, famine, and plague. Casualties were overwhelmingly and disproportionately i...
Nuclear fusion, the process that powers the sun and the stars, is heralded as the ultimate energy source for the future of mankind. The promise of nuclear fusion to provide clean and safe energy, while having abundant fuel resources continues to drive global research and development. However, the goal of reaching so-ca...
In the second half of the twentieth century the word ghetto in American culture was used to describe overpopulation and poverty in urban settings. Sections of cities, usually housing recent immigrants of African American or Latino origin, came to be referred to by this term. It communicated a kind of substandard living...
Like what you saw? Create FREE Account and: Economics: Cost & Revenue - Problem 3 The average cost is the cost per item of producing a certain number of items, or c(x)/x. So, to find average cost for a certain, given a cost function, simply plug in the number of items into the cost function, and divide by that number. ...
Asteroids are some of the most ancient objects in the Solar System, relics left over from the time when the planets first started forming and evolving. For this reason, scientists are very interested in them, since they can provide clues as to how this process occurred. Most asteroids orbit the Sun in a broad belt betw...
Preamble to the United States Constitution United States of America |This article is part of a series on the| |United States Constitution| Preamble and Articles of the Constitution |Amendments to the Constitution| Full text of the Constitution The Preamble to the United States Constitution is a brief introductory state...
You can find all the previous posts about below: Introduction to Vedic Mathematics A Spectacular Illustration of Vedic Mathematics Multiplication Part 1 Multiplication Part 2 Multiplication Part 3 Multiplication Part 4 Multiplication Part 5 Multiplication Special Case 1 Multiplication Special Case 2 Multiplication Spec...
The Roman Republic was the era of classical Roman civilization beginning with the overthrow of the Roman Kingdom, traditionally dated to 509 BC, ending in 27 BC with the establishment of the Roman Empire. It was during this period that Rome's control expanded from the city's immediate surroundings to hegemony over the ...
Graphing Rational Functions Lesson 8 of 12 Objective: SWBAT find equations of asymptotes and graph rational functions. Start class by reviewing what rational functions are. Give students the two questions below. After discussing with their tables for about three minutes, have a class discussion about these. 1. What is ...
Python Certification Training for Data Scienc ... - 52k Enrolled Learners - Live Class Python programming language comes with in-built data types like list, dictionary, set, tuple, etc. Range in python is another in-built python datatype which is mainly used with loops in python. It returns a sequence of numbers specif...
Students should recognize that some types of charts are more appropriate than others, depending on the nature of the data or the message the author is trying to convey. Teaching Tip Reading Strategies: Students can read individually, in partners, or as a whole class. The guide is not particularly long, but you’ll want ...
Let me tell you about resistor color code and how it works. We often look at a lot of resistors in many electronic circuits. Do you know how to use it? How it works. I think it is a very important electronic device. If you do not have them. Your project may not work. What is a resistor What does a resistor do It will r...
CBSE Class 9 Science Notes Chapter 3 Atoms And Molecules: Download PDF Here Atoms and molecules are responsible for forming tiny sand particles, gargantuan black holes and everything in between. The atom is the most fundamental unit of matter, making up everything that we see around us. It is extremely small, measuring...
The Anglo-Saxons were a cultural group that inhabited England in the Early Middle Ages. They traced their origins to settlers who came to Britain from mainland Europe in the 5th century. However, the ethnogenesis of the Anglo-Saxons happened within Britain, and the identity was not merely imported. Anglo-Saxon identity...
Table of Contents : Top Suggestions 2 X 2 Multiplication Worksheet : 2 X 2 Multiplication Worksheet Fixed point representation allows us to use fractional numbers on low cost integer hardware this article will discuss several multiplication examples using the fixed point representation to read 2 if we multiply 23 x 1 4...
2 Answers | Add Yours Regarding the process of expanding the money supply, in theory, the government could expand the money supply as much as it wants by simply creating more money. However, there are at least two limits on this process. One limit is inflation. If the government simply creates too much money, inflation...
Listen and Learn Science/Chemical Reactions - 1 Chemical Reactions. - 1.1 Chemical Reactions. - 1.2 Alloys. - 1.3 Solutions. - 1.4 Valence - 1.5 Noble Gases. - 1.6 Valence of elements. - 1.7 Bonding. - 1.8 Nomenclature of a chemical reaction. - 1.9 Balancing a chemical reaction. - 1.10 Types of chemical reactions. - 1....
Scientists have identified more than 52,000 meteorites—space rocks that have crashed into Earth.Of these rocks, fewer than 100 have been traced to the planet Mars, one of our closest neighbors in the solar system.Scientists didn’t know these strange space rocks came from Mars until NASA’s Viking spacecraft successfully...
In mathematics, a complex number is a number of the form where a and b are real numbers, and i is the imaginary unit, with the property i 2 = −1. The real number a is called the real part of the complex number, and the real number b is the imaginary part. Real numbers may be considered to be complex numbers with an ima...
Our editors will review what you’ve submitted and determine whether to revise the article.Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work! Antarctic meteorite, any of a large group of meteorites that have been collected in Antarctica, first by Japanese e...