Hank summarizes the five reasons why infrared telescopes were supposed to be impossible to build, and then describes how a team of scientists and engineers overcame those obstacles to build the James Webb Space Telescope.

Howcast - Check out this L.A. Noire walkthrough and beat "Nicholson Electroplating" with this online demo.

A very small unit of length equivalent to one ten-millionth of a millimetre, or 10^-10m.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise...

Crystal Lattice Structures: Density Calculation 4

Crystal Lattice Structures: Density Calculation 2

Crystal Lattice Structures: Density Calculation 1