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Scientists have discovered that the surface of the moon can accumulate a huge charge of static electricity - up to 4,500 V has been detected so far. The scientists, writing in Geophysics Research Letters number 34,
Astrophysicists found that the moon's surface becomes electrified during each full moon. The moon passes through the Earth's magnetotail, a cone of highly-charged particles, for about 6 days each month. On the side of the moon facing the sun, ultraviolet particles disrupt the electromagnetic effect, keeping the voltage at low levels, but on the dark side, the voltage can reach hundreds or thousands of volts.
On the side of the moon facing the sun, ultraviolet particles disrupt the electromagnetic effect, keeping the voltage at low levels, but on the dark side, the voltage can reach hundreds or thousands of volts.
Originally posted by loner007
On the side of the moon facing the sun, ultraviolet particles disrupt the electromagnetic effect, keeping the voltage at low levels, but on the dark side, the voltage can reach hundreds or thousands of volts.
I think you already answered your own question......
Originally posted by Korg Trinity
Originally posted by loner007
On the side of the moon facing the sun, ultraviolet particles disrupt the electromagnetic effect, keeping the voltage at low levels, but on the dark side, the voltage can reach hundreds or thousands of volts.
I think you already answered your own question......
Low levels?? 4500 volts??
Thats enough to knock out anything electronic and flatten a human. On the Dark side, hundreds of thousands of volts... well enough said.
It does make sense as to why there are no rovers on the moon.... And is one of the many reasons why I think Apollo was hoaxed.
All the best,
Korg.
Originally posted by Retrovertigo
I think what Loner is getting at is the US didn't land on the dark side of the moon where the voltage of the static charge is at its highest...
The US landed on the bright side of the moon
Landis and colleagues at NASA Glenn first noticed this problem in the late 1990s before Mars Pathfinder was launched. "When we ran a prototype wheel of the Sojourner rover over simulated Martian dust in a simulated Martian atmosphere, we found it charged up to hundreds of volts," he recalls.
That discovery so concerned the scientists that they modified Pathfinder's rover design, adding needles half an inch long, made of ultrathin (0.0001-inch diameter) tungsten wire sharpened to a point, at the base of antennas. The needles would allow any electric charge that built up on the rover to bleed off into the thin Martian atmosphere, "like a miniature lightning rod operating in reverse," explains Carlos Calle, lead scientist at NASA's Electrostatics and Surface Physics Laboratory at Kennedy Space Center, Florida.
Similar protective needles were also installed on the Spirit and Opportunity rovers. image Electrostatic discharge points at the base of Sojourner's antenna. On the Moon, "Apollo astronauts never reported being zapped by electrostatic discharges," notes Calle. "However, future lunar missions using large excavation equipment to move lots of dry dirt and dust could produce electrostatic fields. Because there's no atmosphere on the Moon, the fields could grow quite strong. Eventually, discharges could occur in vacuum."
Originally posted by Korg Trinity
Well why do you think there is serious consideration to this effect now?? this was only discovered in the 1990's.
Back in the 60's they would have not known about this effect.
Amplitude did you say? Annoyance did you say??
why not ask any electronics manufactures of the dangers of static to thier electronics. ESD kills electronics.
Whats-more is that the average static shock you may receive here on earth maybe enough to make you jump, but to an astronaut on the moon it may be enough to stop your heart out right.
check this...
First Science
Landis and colleagues at NASA Glenn first noticed this problem in the late 1990s before Mars Pathfinder was launched. "When we ran a prototype wheel of the Sojourner rover over simulated Martian dust in a simulated Martian atmosphere, we found it charged up to hundreds of volts," he recalls.
That discovery so concerned the scientists that they modified Pathfinder's rover design, adding needles half an inch long, made of ultrathin (0.0001-inch diameter) tungsten wire sharpened to a point, at the base of antennas. The needles would allow any electric charge that built up on the rover to bleed off into the thin Martian atmosphere, "like a miniature lightning rod operating in reverse," explains Carlos Calle, lead scientist at NASA's Electrostatics and Surface Physics Laboratory at Kennedy Space Center, Florida.
Similar protective needles were also installed on the Spirit and Opportunity rovers. image Electrostatic discharge points at the base of Sojourner's antenna. On the Moon, "Apollo astronauts never reported being zapped by electrostatic discharges," notes Calle. "However, future lunar missions using large excavation equipment to move lots of dry dirt and dust could produce electrostatic fields. Because there's no atmosphere on the Moon, the fields could grow quite strong. Eventually, discharges could occur in vacuum."
So Apollo never experienced anything even remotely static on the moon??
Hmmmmm... there appears to be a conflict going on here....
Korg.
Originally posted by Retrovertigo
And as Chadwickus and Expat have pointed out, when it comes to electricity its all about amperes or the strength of the current...Without it, voltage doesn't mean a great deal...
Originally posted by shagreen heart
reply to post by Korg Trinity
the article actually states "...hundreds or thousands of volts", not hundreds of thousands.
and it could be dissipated upon meteor impacts.