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Light is a form of electromagnetic radiation. At some wavelengths, it appears as visible light, at others it takes the form of radiation we cannot see such as ultraviolet, infrared, and x-rays. X-rays have very short wavelengths that, unlike visible light, are able to pass right through most tissues in the human body. Since bones

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For those of you who for some reason are not obsessed with the Fermi paradox, Enrico Fermi posed the following – the same guy with the nuclear reactor in Chicago and all that – posed the following question. If there are alien worlds as you might claim since there are billions of stars in billions

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>>Now, with kinematics, it’s kind of the same thing as force, is you want to identify which way you’re accelerating and which way you’re not accelerating to choose your axes. So, for instance, you know on a frictionless horizontal surface, gravity pulls straight down, and there’s no acceleration because nothing is pulling sideways. So therefore,

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Physics is the natural science that involves the study of matter   and its motion through space and time, along with related concepts such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves! In order to introduce this complex subject we may need to expand our imagination, our way of thinking, considering we are

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NARRATOR: When we think of E=mc2 we have this vision of Einstein as an old wrinkly man with white hair. E=mc2 is not about an old Einstein. It’s actually about a young, energetic, dynamic, even a sexy Einstein. ALBERT EINSTEIN: What would I see if I rode on a beam of light? MICHAEL FARADAY (Dramatization):

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Let’s see what it does. You want to have a look inside? We’ve got a rubber belt and down at the bottom there’s a little aluminium piece and the belt moves around. At the bottom it rubs electrons off the aluminium down the bottom, so we keep supplying electrons to it, carries them up to

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Bonjour à tous, bienvenue dans cette nouvelle vidéo. Aujourd’hui, petit changement de décor puisqu’on est dans ma cuisine et qu’on va essayer de répondre à cette question absolument essentielle qui est: Pourquoi est-ce que le Pastis devient opaque quant on l’allonge avec de l’eau ? ♪ [Générique] ♪ Alors le phénomène dont on va parler

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LEWIN: One of the most remarkable things I just mentioned to you is that the period of the oscillations is independent of the mass of the object. That would mean if I join the ball, and I swing down with the ball, that you should get that same period, or should you not? I’m asking

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