It's consensus that the very similar apparent sizes of the Moon and the Sun as seen from Earth is a coincidence (as already answered in this site). This provides us with almost exact total solar
The reason the Delta 13C has waves is because the amount of carbon 14 in the air depends on the amount of cosmic rays before that time, but the amount of cosmic rays goes up and down (mostly due to sun activity). Another isotope that depends on cosmic ray abundance in the atmosphere is beryllium-10. Carbon 14 has a half life of about 6000 years.
The sun, like the moon, produces tides on the earth. The solar tides are weaker but big enough so that you can easily tell the difference between when the solar tides are adding to the lunar tides (a spring tide) vs when they are partly counteracting them (a neap tide). And tides are nothing but the part of the effect of an object's gravity that shows up because you're either closer or farther ...
I want to know how much lux the sun emits on a bright day - I don't mean when one stares directly at the sun, but rather when one walks casually outside when the sun is shinning brightly. Now the
Here is the measured radiation from the sun It is fitted with a black body curve, at the top of the atmosphere (yellow) and even though it is evident that there are deviations from the theoretical black body, it is still a good approximation. Generally all bodies radiating are approximated with a black body spectrum. If it fits well, that means that it also absorbs the same type of spectrum ...
The Sun's energy comes primarily from fusion of light elements in its core. It is estimated that a very small fraction of mass of the Sun (~$10^{-12}$ times the abundance of hydrogen) is uranium (b...
If this is the case, then when we read things like what time sun sets and rises on websites, books, calendars, other official times, et al… does that mean when we see for example ‘sun set at 18:35’ is the time denoting the actual sun set taking into account of the mirage or what is visible to us.
The Sun is an incoherent source, meaning the photons coming from its surface really are independent in phase, so the above calculations are appropriate. This is in contrast to a laser, where the phases have a very tight relation to one another (they are all the same).
The light from the Sun has a color blip, right where early atomic physics suggested the element with two protons in its nucleus would radiate. That element, called Helium (from Helios, Greek word for the Sun) really does exist. discovery of Helium There isn't any of it (nor evidence of it) in light from a typical light bulb.
When you feel "heat" from the Sun, what you're actually feeling is the infrared radiation that the Sun emits. The reason infrared radiation feels hot is because your body is mostly water, and infrared radiation tends to vibrate the bonds of water molecules. But if there's a lot of water in the air, then the infrared radiation will be absorbed by the water in the air before it hits your body ...
