SciShow
The Most Sophisticated Mirror in the Universe
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.
Curated Video
Angstrom
A very small unit of length equivalent to one ten-millionth of a millimetre, or 10-10m. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...
Catalyst University
Crystal Lattice Structures: Density Calculation 4
Crystal Lattice Structures: Density Calculation 4
Catalyst University
Crystal Lattice Structures: Density Calculation 2
Crystal Lattice Structures: Density Calculation 2
Catalyst University
Crystal Lattice Structures: Density Calculation 1
Crystal Lattice Structures: Density Calculation 1
Getty Images
This movie shows the Sun from the two STEREO spacecraft using the 171 Angstrom filter in the Extreme UltraViolet Imager (EUVI).
The 171 filter reveals ionized iron (Fe+8=Fe IX, Fe+9=Fe X), which forms at temperatures above 1,300,000K, and flows along the magnetic field lines of the solar active regions
Getty Images
This movie shows the Sun from the two STEREO spacecraft using the 304 Angstrom filter in the Extreme Ultraviolet Imager (EUVI).
This filter reveals ionized helium (He+1=He II), which forms at temperatures above 80,000K. This filter shows prominences and filaments above the solar surface