If there is nothing faster than the speed of light, then how come it can't outrun a black hole?
Exactly! I wrote that in another forum.
If there is nothing faster than the speed of light, then how come it can't outrun a black hole?
Exactly! I wrote that in another forum.
If there is nothing faster than the speed of light, then how come it can't outrun a black hole?
Exactly! I wrote that in another forum.
Finally someone who shares my opinions
If there is nothing faster than the speed of light, then how come it can't outrun a black hole?
Exactly! I wrote that in another forum.
Finally someone who shares my opinions
Nevertheless, this is about Einstein's theory. If you have questions of the black hole thing, go to my other forum.
The 21 grams experiment refers to a scientific study published in 1907 by Duncan MacDougall, a physician from Haverhill, Massachusetts. MacDougall hypothesized that souls have physical weight, and attempted to measure the mass lost by a human when the soul departed the body. MacDougall attempted to measure the mass change of six patients at the moment of death. One of the six subjects lost three-fourths of an ounce (21.3 grams).
MacDougall stated his experiment would have to be repeated many times before any conclusion could be obtained. The experiment is widely regarded as flawed and unscientific due to the small sample size, the methods used, as well as the fact only one of the six subjects met the hypothesis.[1] The case has been cited as an example of selective reporting. Despite its rejection within the scientific community, MacDougall's experiment popularized the concept that the soul has weight, and specifically that it weighs 21 grams.
So we now know that light's energy is through momentum not mass, but how exactly is it taken in by a solar panel?
So we now know that light's energy is through momentum not mass, but how exactly is it taken in by a solar panel?
That is the question I'm trying to answer with this forum.
that is only how fast they travel across space. Besides, discuss that in my other forum.
That got me thinking; what is the equivalent energy of light?
The energy (E) of a photon is related to its frequency. E = (frequency) x (plank's constant)
How can we use it to make energy via the use of solar panels?
You can google the photoelectric effect. In fact this is what Einstein received his Nobel Prize in Physics for, not for relativity, which is a whole story itself.
Anyway, the idea is when light with enough energy (meaning light at the right frequency) hits a special kind of material, it can free an electron from being bound to an atom. The electron is then free to move around that material.
Electricity can be simply defined as the flow of electrons in a material. So whenever you start moving electrons you've got a current.
Solar panels use semiconductors. To simplify the idea, think of the semiconductors in a solar panel as a one way street. Together they say, "we only let electrons flow in this direction!" So when light frees the electrons the semiconductors make sure they flow in the direction that powers your device.
Wouldn't the energy equivalent of light be zero?
You're right that light doesn't have energy due to its mass because light is defined as being massless. However physics gets unintuitive, and light can be treated either as a wave or as a packet of energy. How much energy? We already said E = (frequency) x (plank's constant).
Hope that helps.
Hmm... Although I am in Middle School and can't understand most of what you just said, I can tell it is a valid argument.
If there is nothing faster than the speed of light, then how come it can't outrun a black hole?
Exactly! I wrote that in another forum.