visible and invisible light
UV rays are a part of the electromagnetic spectrum, which includes light, radio, x-ray, infrared, and other "waves". All of these travel through space as photons. Photons behave both as particles and as waves. Their particle nature lets them travel through space, where there is nothing to conduct them, as a wave would normally need.
Photons do travel in a straight path. To a person observing the photons though they will appear to be curved because of the gravitational field.
The expansion of space in all parts of our Universe. When a group of photons leave an object (like a super-nova in a distant galaxy), they have a certain wavelength, and a certain distance between the first photons from that super-nova and the last such photons. During their travel, the expansion of space causes the wavelength of the photons to increase (even if they interact with no matter whatsover in their travels), as well as the distance between the first photons to leave and the last photons to leave. If these photons travel for enough time (say, a few 100 million to a few billion years) before they reach a detector on our Earth, the increase in wavelength AND the distance between the first and last photons becomes measurable. The photons have a wavelength longer than they "should" have, and the time between the first photons to arrive and the last to arrive will increase. The increase in wavelength, as well as the increase in time for the super-nova to last, will be as predicted by Hubble's Law.
The surface temperature of the sun is roughly 5,800K, so the color of most of the photons that leave the sun's surface is green.
yes, x ray radiation photons have more energy than infrared waves
Visible radiation: 370-750 nm. Infrared radiation: 750 nm-300 Î¼m These wavelenghts are not long.
No, since there is insufficient energy in infrared photons to carry on photosynthesis.
visible and invisible light
Generally, photons are very easy to detect. Your eyes do a good job of detecting photons within a certain frequency band, as photons constitute light and other electromagnetic radiation. Individual photons are impossible to detect with modern technology.
Photons do not come in different types like infared-photons etc. they are just the wavelength that the photons are at and nuclear fusion just happens to emit photons at a particular wavelength
Radiates it (mainly as infrared photons).
Photons are emitted (light energy) and infrared energy.
When they're incident on glass, infrared photons do the same things that photons of otherwavelengths do ... some are reflected, some are absorbed, and some are transmitted.How many of the photons undergo each process depends on the energy of the photonsand the chemical composition of the glass.
A PET scan uses radioisotope decay by detecting the pair of annihilation photons emitted during the decay process.
The water molecules release energy in the form of infrared photons that are absorbed by the surrounding air.
Each X-ray photon carries more energy than an infrared photon does. But it's still very easy to shine an infrared beam that has far more energy than an X-ray beam. Simply use an infrared source that radiates more photons than the X-ray source does.