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Personally i could not give a flying f*ck
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∙ 11y ago
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Is radiation from the sun always harmful?
No - in general it does more good than harm - but its good that there is an ozone layer.
Is the sun good or bad for us?
The Sun is good because it is the source of all our heat and energy. it also gives us a good resource of vitimin d The sun also Emmit's UV radiation which can be harmful
What conditions cause a mirage?
There needs to be a layer of very warm air just above the ground. Dark road surfaces on hot sunny days are very good at providing this.
What is the primary reason why the albedo of the Earth is roughly 30 percent?
albedo
Ultraviolet wavelength telescope to look at distant galaxies?
For Earth-based telescopes this is not a particularly good idea since the ozone layer in the Earth's atmosphere absorbs some of the UV radiation. For space based telescopes, all wavelengths are useful.
What are good reflectors of sound with example?
the moon , frosted glass, aluminium
Are reflectors or absorbers good for keeping cold?
it's reflectors.....
What is the best color not to reflect heat?
Light colours like silver or white are good reflectors of solar radiation.
What type of surfaces are good radiators of heat?
Dull black surfaces they are also best at absorbing it as well. [Shiny and silvery or white surfaces are poor radiators and absorbers of heat. However they are very good in reflecting heat radiation.]
between white and silver surfaces, which one is the best emitter of radiation?
The best emitter of radiation depends on the type of radiation you are referring to. Generally, when discussing thermal radiation, a "blackbody" is considered the best emitter. A blackbody is an idealized object that absorbs all incident radiation and emits radiation perfectly according to its temperature. In real-world scenarios, there is a concept called "emissivity," which quantifies how effectively an object emits thermal radiation compared to a blackbody at the same temperature. The emissivity of an object ranges between 0 and 1, with 1 being a perfect blackbody. Regarding white and silver surfaces: White surfaces: White surfaces tend to have high reflectivity and low emissivity. This means they are good at reflecting incoming radiation and do not emit thermal radiation as effectively. In terms of thermal radiation emission, they are not the best emitters. Silver surfaces: Silver surfaces also have high reflectivity but generally have higher emissivity compared to white surfaces. They emit more thermal radiation than white surfaces, but they are still not as effective emitters as a perfect blackbody. In conclusion, between white and silver surfaces, silver surfaces would be the better emitter of thermal radiation due to their higher emissivity. However, neither of them is as efficient as a blackbody emitter. Keep in mind that the exact emissivity values can vary based on the specific properties and conditions of the materials used.
What are good reflectors for solar cookers?
y
Is a good absorber of radiation a good emitter or a poor emitter?
It is a good emitter, as you can not have a good absorber, which isn't a good emitter. Dark, Matt surfaces are good emitters and absorbers e.g. a saucepan.
Is a good reflector of radiation a good emitter of radiation?
A good absorber of radiation is a good emitter. Radiation is the energy that that comes from a source and travels through space or through something. Some examples of radiation include light, heat and sound.
Are silvered surfaces good or poor absorbers of infrared radiation?
Very very poor, they have a tendency of blowing you IP.
Do cat's eyes give out light?
No but they are very good reflectors.
Why does your wii sensor bar glow?
first the sensor bar uses infared tec when a different infared signal comes in the sensor bar's it turns white because the infared signal is changed video camms can do this or it wants to look good for the camera What does the first answer even say?
Is dull black surface is a good radiator of heat?
Yes, it is. As dull and black surfaces are the best emitters as well as the best absorbers of radiation. Hope my answer is good enough to be stand up your question needs.
