sunlight
PAR- Photosynthetically Active Radiation- 400-700nm
-15, Moderare X-Ray Radiation.
in the range of 400-700 nanometers. This type of light is known as photosynthetically active radiation (PAR).
It is determined by whether the molecule is polar or nonpolar. Nonpolar molecules do not absorb radiation in the microwave region; therefore, they are microwave inactive. Polar molecules are microwave active.
Photobiologically Active Radiation
sunlight
Radiation therapy uses radiation from radioactive elements to destroy cancer cells. It works on the principle that cancer cells are more active than normal cells and more prone to radiation damage than normal cells.
PAR = Photosynthetically Active Radiation
PAR- Photosynthetically Active Radiation- 400-700nm
-15, Moderare X-Ray Radiation.
Galaxies that emit much more radiation (different types of radiation) than a typical galaxy. This actually happens in the galaxy's center, so it's more accurate to talk about an active galactic nucleus. The active galactic nucleus is believed to be caused by a black hole. From Wikipedia: " The radiation from AGN is believed to be a result of accretion of mass by a supermassive black hole at the centre of its host galaxy."
Radiation Treatment does not make the patient radio-active you know! I merely creates heat, similar to a micro-wave oven.
As of today, no country is known to have an Enhanced Radiation Weapon ("neutron bomb") in their active stockpile.
PAR stands for Photosynthetically Active Radiation, which refers to the spectral range of solar radiation that plants use for photosynthesis. This includes wavelengths between 400 to 700 nanometers.
Active remote sensing uses its own electromagnetic radiation and use microwaves. It maps areas hard to map.
coined by Pierre and Marie Curie in 1898, originally radio-actif, which came from radio-, comb. form of Latin. radius (see radiation) + actif(fem. active) "active."