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Go to any paint store or nail-polish shelf and you’ll see a dozen or so variations of the color black. Even inside a crayon box, there are a lot of shades. But what is the blackest black out there? (3:22 min.)

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When we look at the sky, we have a flat, two-dimensional view. So how do astronomers figure the distances of stars and galaxies from Earth? (5:29 min.)

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In this winning entry for the 2014 Flame Challenge Physics Girl explains the mystery of color. How we see colour is very complicated and involves wavelength, reflection, signals and perception (3:50 min.)

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What you see is not always what you get! Sometimes this is caused by the physical structure of the eye while at other times it is your brain that is editing out (or adding) as it tries to make sense of the world. (2:54 min.)

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What is the difference between a theory and a law... and is one “better”? Matt Anticole shows why science needs both laws and theories to understand the whole picture.

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This video uses thermal imaging to show why it is important to stir mixtures using examples of an acid and an alkali in water. (6:09 min.)

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When we measure things, most people are only worried about how accurate, or how close to the actual value, they are. Matt Anticole explains what exactly precision is and how can help us to measure things better. (4:52 min.)

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Using thermal imaging, this video explains how chemical hand warmers work as well as how the solution inside them is made. (5:07 min.)

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Tesla and SpaceX CEO Elon Musk exudes confidence and know-how, both essential elements of good entrepreneurship. But according to TED's Chris Anderson, what sets Musk apart from the rest is the massive respect he has for the science behind his investments. (2:08 min.)

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Is the construction of a space elevator viable? Or is it science fiction? This video addresses what a space elevator would like, what it could be made of and the challenges involved in building one. (5:25 min.)

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