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originally posted by: cooperton
originally posted by: Gothmog
a reply to: cooperton
There is so much wrong in the OP that I just don't know where to begin .
Where would you like me to start ?
How the astronauts survived the lunar surface with 111,000mph solar winds
originally posted by: Zanti Misfit
a reply to: cooperton
Nonsense...............
originally posted by: Grenade
a reply to: chr0naut
I would say those measurements are based on a single photon return out of 10000000000000000000000 fired, with some crazy calculations and factors to account for.
"To compute the lunar distance precisely, many factors must be considered in addition to the round-trip time of about 2.5 seconds. These factors include the location of the Moon in the sky, the relative motion of Earth and the Moon, Earth's rotation, lunar libration, polar motion, weather, speed of light in various parts of air, propagation delay through Earth's atmosphere, the location of the observing station and its motion due to crustal motion and tides, and relativistic effects.[17][18] The distance continually changes for a number of reasons, but averages 385,000.6 km (239,228.3 mi) between the center of the Earth and the center of the Moon.[19] The orbits of the Moon and planets are integrated numerically along with the orientation of the Moon called physical Libration.[20]
At the Moon's surface, the beam is about 6.5 kilometers (4.0 mi) wide[21] and scientists liken the task of aiming the beam to using a rifle to hit a moving dime 3 kilometers (1.9 mi) away. The reflected light is too weak to see with the human eye. Out of 10 to the power of 21 photons aimed at the reflector, only one is received back on Earth, even under good conditions.[22] They can be identified as originating from the laser because the laser is highly monochromatic."
originally posted by: chr0naut
originally posted by: Akaspeedy
probably by this guy 'editing' it constantly en.wikipedia.org...
probal
originally posted by: chr0naut
a reply to: cooperton
How did we (and the Russians) leave stuff there, then?
Stuff like the five laser retroreflectors that we can now shine lasers off, and get very accurate distance measurements with?
Lunar Laser Ranging experiment From Wikipedia, the free encyclopedia
When I was at University, we bounced a beam off one of the retroreflectors using the Universities' old 0.6m reflector telescope.
The retroreflectors must be there.
originally posted by: Akaspeedy
🤣 wikipedia....🤣 edited by anyone and everyone.....🤣🤣 a reply to: chr0naut
I lean more towards us going to the moon but I still have questions.
Refrigeration in the near vacuum of space is a bit of a puzzle to me.
I have a basic background in earthly refrigeration. I’ve always wondered how, in a sealed system, the heat is dumped to space.
In an open refrigeration system more refrigerant would need to be used than could be carried.
Any ideas?
The cooling of the circulating oxygen and water is accomplished by leading it past a sublimator: a device consisting out of porous plates through which water is being forced. Upon contact with the vacuum of space, the water freezes into ice, after which it sublimates from this solid phase into gas. This endothermic process causes the sintered nickel plates of the sublimator to become very cold, cooling any oxygen and water that is led over it.
The sublimating process is self-regulating, in that the rate of vapor formation depends on the amount of heat that is applied to the device. The pressure that forces the feed water into the sublimator’s plates is provided by the squeezing of the feed water bladder that’s placed between the PLLS and the user’s back. Though fairly compact, this sublimator can dissipate over 2 MJ (2,000 BTU) peak, making it the equivalent of an air conditioning unit sized for a bedroom. This allows a human in the full heat of a Moon day to stay nice and cool.
originally posted by: cooperton
Take for example the 2MHz of RAM that was used on the Apollo mission. To put things in perspective, a Nintendo 64 has 250MHz of RAM.
originally posted by: Grenade
a reply to: chr0naut
That sometimes it's easier to start with an assumption then work out the math to fit that expectation.
Does equipment on the moon prove that men have been there? We have rovers on mars sending all sorts of data back seemingly.