enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Brightness temperature - Wikipedia

   en.wikipedia.org/wiki/Brightness_temperature

   Brightness temperature or radiance temperature is a measure of the intensity of electromagnetic energy coming from a source. [1] In particular, it is the temperature at which a black body would have to be in order to duplicate the observed intensity of a grey body object at a frequency ν {\displaystyle \nu } . [ 2 ]

3. Level sensor - Wikipedia

   en.wikipedia.org/wiki/Level_sensor

   Hydrostatic pressure level sensors are submersible or externally mounted pressure sensors suitable for measuring the level of corrosive liquids in deep tanks or water in reservoirs. Typically, fluid level is determined by the pressure at the bottom of the fluid containment (tank or reservoir); the pressure at the bottom, adjusted for the ...

4. Template:Solar radius calculator - Wikipedia

   en.wikipedia.org/wiki/Template:Solar_radius...

   All radii, once calculated, are divided by 6.957 × 10 8 to convert from m to R ☉.. AD radius determined from angular diameter and distance =, (/) =, = D is multiplied by 3.0857 × 10 19 to convert from kpc to m

5. Lux - Wikipedia

   en.wikipedia.org/wiki/Lux

   The lux (symbol: lx) is the unit of illuminance, or luminous flux per unit area, in the International System of Units (SI). [1] [2] It is equal to one lumen per square metre.In photometry, this is used as a measure of the irradiance, as perceived by the spectrally unequally responding human eye, of light that hits or passes through a surface.

6. O-type main-sequence star - Wikipedia

   en.wikipedia.org/wiki/O-type_main-sequence_star

   An O-type main-sequence star (O V) is a main-sequence (core hydrogen-burning) star of spectral type O and luminosity class V. These stars have between 15 and 90 times the mass of the Sun and surface temperatures between 30,000 and 50,000 K. They are between 40,000 and 1,000,000 times as luminous as the Sun.

7. Light meter - Wikipedia

   en.wikipedia.org/wiki/Light_meter

   Use of a light meter for portrait cinematography in a Turkish music video set. A light meter (or illuminometer) is a device used to measure the amount of light.In photography, an exposure meter is a light meter coupled to either a digital or analog calculator which displays the correct shutter speed and f-number for optimum exposure, given a certain lighting situation and film speed.

8. Billy Bob Thornton Rejected ‘Mission: Impossible’ Villain ...

   www.aol.com/billy-bob-thornton-rejected-mission...

   Billy Bob Thornton is more than happy to play a foul-mouthed Santa (“Bad Santa”) or a high school football coach (“Friday Night Lights”) or a NASA scientist (“Armageddon”), but one ...

9. Strömgren sphere - Wikipedia

   en.wikipedia.org/wiki/Strömgren_sphere

   The formula derived by Strömgren describes the relationship between the luminosity and temperature of the exciting star on the one hand, and the density of the surrounding hydrogen gas on the other. Using it, the size of the idealized ionized region can be calculated as the Strömgren radius. Strömgren's model also shows that there is a very ...