Sentences with phrase «uv radiation they emitted»

This resulted in the first stars flickering on across the Universe, and the UV radiation they emitted interacted with the surrounding hydrogen gas.

Not exact matches

The sun, for example emits a lot of UV radiation, actually more and more every century.

In addition to emitting visible light, the stars also gave off ultraviolet (UV) radiation, which split the neutral hydrogen it encountered into electrons and protons — ionizing it once again, and thereby launching what researchers call the «epoch of reionization.»

They emit UV radiation; UV - A damages cells and DNA, causing skin cancer, and UV - B causes burning and contributes to skin cancer.

«It was common for babies and school children to be treated with commercial UV radiation - emitting devices and exposed, unclothed, to the midday sun.

From this, the team has identified approximately five thousand galaxies that match their criteria, i.e. very compact galaxies emitting very intense UV radiation.

The UV LED device also emits a much narrower band of UVB light and thereby decreasing likelihood of skin damage that can occur when the skin is exposed to higher wavelengths of UV radiation.

Astronomers have seen the star emit a superflare that briefly made it 68 times brighter than usual, and could expose any life on the surface of its orbiting Earth - sized planet to fatal levels of UV radiation.

Stars emit UV radiation and ionizing photons necessary to heat and strip surrounding gas.

AM or PM: Reapply as needed whenever the sun is out, or you are exposed to artificial light that emits UV radiation

For example, UV radiation is all absorbed in the stratosphere, such that notable stratospheric changes arise with changes to the non-thermal radiation emitted by the sun.

CO2 (which doesn't contribute much to the heating because it doesn't absorb in UV wavelengths) facilitates cooling by virtue of its ability to emit infrared radiation to space in proportion to local temperature.