ultraljubičasto zračenje

ultraljubičasto zračenje

The invisible electromagnetic radiation beyond the violet end of the spectrum of visible light, of wavelengths ranging, roughly, from 4000 down to 400 angstroms.

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Industry/Domain: Astronomy
Category: Mars
Company: NASA
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zračenje

Medical devices; Radiology equipment

Exposure to radiation.

zračenje

Health care; Cancer treatment

The use of high-energy radiation from x-rays, gamma rays, neutrons, protons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside ...

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Energy moving in the form of particles or waves. Familiar radiations are heat, light, radio waves, and microwaves. Ionizing radiation is a very high-energy form of electromagnetic ...

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The propagation of energy through space or matter. In radiology, radiation can be divided into two main groups: charged particles (electrons, protons, etc. ) and electromagnetic ...

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Astronomy; Mars

The position on the ecliptic occupied by the sun about december 22 when it reaches its greatest southerly declination.

proljetna ravnodnevica

Astronomy; Mars

The position on the celestial sphere occupied by the sun on or about march 21 when its path on the ecliptic crosses the celestial equator going from south to north. This point is ...

Mars

Astronomy; Mars

Mars is the fourth planet from the Sun. Mars' diameter is 6,790 km and takes 687 days to orbit the Sun. Mars is named after the Roman god of war. In Eastern Asian cultures Mars is ...

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Astronomy; Mars

The gaseous envelope surrounding a celestial body.

astronomska jedinica (AJ)

Astronomy; Mars

A measure for distances within the solar system, equal to the mean ditance of the earth from the sun, which is about 93,000,000 miles.

osa rotacije

Astronomy; Mars

The straight line, real or imaginary, passing through a rotating body and is the line about which that body rotates.

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Marija Horvat

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Industry/Domain: Chemistry Category: General chemistry

grafen

Nakon odvajanja od grafita, grafen je jedan od najtanjih i najjačih materijala. Ovaj jednoatomni materijal na bazi ugljika može provoditi električnu ...