Matthew Dea

Science: Latest Scientific Discoveries

Electronegativity and bonding | Chemical bonds | Chemistry | Khan Academy

Electronegativity and bonding | Chemical bonds | Chemistry | Khan Academy

Electronegativity is probably the most important concept to understand inorganic chemistry. We’re going to use a definition that Linus Pauling gives in his book, The Nature of the Chemical Bond. So Linus Pauling says that electronegativity refers to the power of an atom in a molecule to attract electrons to itself. So if I look […]

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Chemistry Careers | What You Can Do With Your Chem Degree
Did scientists REALLY just admit to exaggerating global warming?

Did scientists REALLY just admit to exaggerating global warming?

“Experts admit global warming predictions wrong!” What? No, there’s more to it than that— “Fear of global warming is exaggerated, say scientists!” Excuse me, they didn’t say that at all— “Climate alarmists finally admit ‘we were wrong about global warming’!” Oh look, can you all calm down? That’s enough! “Report shows that the world isn’t […]

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Scientists vs. Public Opinion

Scientists vs. Public Opinion

Collectively, scientists are our biggest thinkers, our problem solvers, the most logical among us, so let’s look at how their views on some of the most important issues facing humanity compare to the general public’s feelings about those same issues, using data from surveys conducted by the Pew Research Center. Scientists overwhelmingly agree that the […]

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How Quantum Computers Break Encryption | Shor’s Algorithm Explained

How Quantum Computers Break Encryption | Shor’s Algorithm Explained

The goal of encryption is to garble data is such a way so that no one who has the data can read it unless they’re the intended recipient. And the encryption of pretty much all private information sent over the internet relies immensely on one numerical phenomenon – as far as we can tell, it’s […]

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Surface Tension and Adhesion | Fluids | Physics | Khan Academy

Surface Tension and Adhesion | Fluids | Physics | Khan Academy

– [Voiceover] If you took a glass of water and a needle, and you took that needle and you very carefully, very carefully dropped it on the water, it would stay there, and it’s not because it’s floating. This needle would not be floating on the water. This needle is more dense than water, and […]

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Rational function – Functions – Mathematics – Pre-university Calculus – TU Delft NEW

Rational function – Functions – Mathematics – Pre-university Calculus – TU Delft NEW

Hello. The quotient of two quantities is called their ratio. A rational function is the quotient, or ratio, of two polynomials. Let us look at an example. Suppose my trip to work involves 3 km of city traffic, which always takes me 6 minutes which is 1/10th of an hour. Subsequently I have to drive […]

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The Mathematics of Locomotion – Christmas Lectures with Ian Stewart

The Mathematics of Locomotion – Christmas Lectures with Ian Stewart

Watch the horse’s legs. Which ones move together? Now in slow motion. It’s diagonally opposite pairs. That’s the trot. This one is exaggerated, but it’s the trot pattern. And it’s not the only animal that uses that pattern. The orangutan is in effect trotting upside down. So we’ve understood two-legged animals and now we’ve understood […]

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Children of Planet Earth: The Voyager Golden Record Remixed – Symphony of Science

1977 1977 NASA LAUNCHES VOYAGER I & II 1977 NASA LAUNCHES VOYAGER I & II TWIN PROBES BOUND FOR INTERSTELLAR SPACE ABOARD EACH IS A GOLDEN RECORD, CARRYING SOUNDS & GREETINGS FROM EARTH ‍Peace on you. We the inhabitants of this earth send our greetings to you I wish you all good Hello and greetings […]

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The Impossible Trinity – 60 Second Adventures in Economics (5/6)

The Impossible Trinity – 60 Second Adventures in Economics (5/6)

Most countries trade with one another – which is usually pretty good for all involved – but it does mean it’s a bit harder for each to keep control of its own finances. There are three things that governments are particularly keen on. They like to keep the exchange rate stable so that import and […]

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