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Sample of a titanium-zirconium-nickel alloy inside the Electrostatic Levitator vacuum chamber at NASA's Marshall Space Flight Center. Electrostatic levitation is the process of using an electric field to levitate a charged object and counteract the effects of gravity .
Comparison of chemical gardens grown by NASA scientists on the International Space Station (left) and on the ground (right) A chemical garden while growing Cobalt(II) chloride A chemical garden. A chemical garden is a set of complex biological-looking structures created by mixing inorganic chemicals.
[1] [2] The experiment took place in the Ryerson Physical Laboratory at the University of Chicago. [3] [4] [5] Millikan received the Nobel Prize in Physics in 1923. [6] The experiment observed tiny electrically charged droplets of oil located between two parallel metal surfaces, forming the plates of a capacitor. The plates were oriented ...
Crookes X-ray tube from around 1910 Another Crookes x-ray tube. The device attached to the neck of the tube (right) is an "osmotic softener". When the voltage applied to a Crookes tube is high enough, around 5,000 volts or greater, [16] it can accelerate the electrons to a high enough velocity to create X-rays when they hit the anode or the glass wall of the tube.
China sent three astronauts on Wednesday to its permanently inhabited space station, where they will conduct dozens of scientific experiments, some related to the construction of human habitats.
An electron floating in space has the dispersion relation E = ℏ 2 k 2 /(2m), where m is the (real) electron mass and ℏ is reduced Planck constant. Near the bottom of the conduction band of a semiconductor, the dispersion relation is instead E = ℏ 2 k 2 /(2 m * ) ( m * is the effective mass ), so a conduction-band electron responds to ...
Bruce McCandless II free-floating in space more than 320 feet away from the Challenger space shuttle. Photo: Reuters. McCandless was the first person to spacewalk untethered on February 7, 1984 ...
The white, satchel-like tool bag slipped away from two astronauts during a rare, all-female spacewalk Nov. 1 as they performed maintenance on the International Space Station, according to social ...