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skiagraph

(Encyclopedia)skiagraph: see X ray.

Einstein Observatory

(Encyclopedia)Einstein Observatory: see X-ray astronomy. ...

Wray, John

(Encyclopedia)Wray, John: see Ray, John.

Grayson, David

(Encyclopedia)Grayson, David: see Baker, Ray Stannard. ...

polarization of light

(Encyclopedia)polarization of light, orientation of the vibration pattern of light waves in a singular plane. Unpolarized light can be converted into a single polarized beam by means of the Nicol prism, a device ...

observatory, orbiting

(Encyclopedia)observatory, orbiting, research satellite designed to study solar radiation, electromagnetic radiation from distant stars, the earth's atmosphere, or the like. Because the atmosphere and other aspects...

virtual observatory

(Encyclopedia)virtual observatory, a collection of integrated astronomical data archives and software tools that utilize computer networks to create an environment in which research can be conducted. Several countr...

neutron star

(Encyclopedia)neutron star, extremely small, extremely dense star, with as much as double the sun's mass but only a few miles in radius, in the final stage of stellar evolution. Astronomers Baade and Zwicky predict...

bremsstrahlung

(Encyclopedia)bremsstrahlung brĕmˈshträˌləng [key]: see X ray. ...

Fridley

(Encyclopedia)Fridley, city (2020 pop. 29,590), Anoka co., SE Minn., a suburb north of Minneapolis, on the Mississippi River; settled 1847, inc. as a city 1957. A dis...