stevestory
Posts: 13407
Joined: Oct. 2005
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| Quote (k.e.. @ May 07 2018,11:59) | | Quote (Glen Davidson @ May 07 2018,18:30) | | Quote (k.e.. @ May 07 2018,09:56) | | Quote (Joe G @ May 07 2018,17:31) | | Quote (fnxtr @ May 04 2018,18:38) | | Quote (Joe G @ May 04 2018,14:05) | | Radio waves are energy. Do the AM and FM transmitters, transmitting energy, raise the temperature? |
Hmm. If only there was an empirical test for this, like standing in front of a 100kW transmitter.
(eta: I just wanted to see him try it) |
So it's only right in front of the transmitter and not everywhere the signal goes.
Thank you for making my point for me. |
Since the solar energy falling on a square meter of the earths surface at midday is approximately 1kw then you would need to have a 100kw transmitter on every square 100 meters of the illuminated earths surface transmitting at full power to have the equivalent amount of energy as the earth gets from the sun.
Basics of Solar Energy-Oregon University
| Quote | | Average over the entire earth = 164 Watts per square meter over a 24 hour day So the entire planet receives 84 Terrawatts of Power our current worldwide consumption is about 12 Terrawatts .... |
What that means moron is that the earth receives each day seven times more energy at the earths surface than all the electricity plants is the world combined produce in a day. |
That figure for total solar energy striking the earth sounded woefully inadequate. Here's a figure I found:
| Quote | | Solar energy is the most abundant energy resource on earth -- 173,000 terawatts of solar energy strikes the Earth continuously. That's more than 10,000 times the world's total energy use. |
https://www.energy.gov/article....-energy
I don't see any calculations, but it sounds a lot closer to what must be the case, that there's vastly more solar energy coming in than any amount we use.
Glen Davidson |
According to the website it is the average Incident Solar Energy on the ground over a 24hr period.
So near enough to 1kw per hour/meter2 during daylight averaged over all seasons*.
I have seen on a couple of websites the "173,000 terawatts of solar energy strikes the [Earth's surface] continuously".
Maybe Joe can do some math homework and figure it out.
But probably not the numbers are a bit big for him.
*ETA and latitudes. |
If you know the solar intensity, the radius of the earth, and the area of a circle, you can figure it out, but the question's still up in the air about whether Joe has that level of middle-school math. We know he doesn't understand trig or probability.
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