shounakbhatta said:suppose that you went to moon.You have nothing else with you except a discharged battery.now if I have to recharge it how'd I do it? Only equipment permitted is a small copper wire.
Tanks
.Scott said:Check out this article:
http://www.nature.com/news/2007/070129/full/news070129-16.html
The solar wind creates electrostatic charges on the moons surface. He's only given a short copper wire to charge the battery. That's clearly what his professor has in mind.phinds said:Do you really think that has any bearing on the OP's question?
I believe areas exposed to the solar wind get a + charge, so put the battery in a shaded/protected area with the copper wire attached to the + terminal and extend the wire to an area where dust is suspended because of the electrostatic charge. Then bear in mind that if I create a single ion in that battery, I can claim to have charged it - though not "fully" charged it. You can then radio the professor (using another battery inaccessibly tucked into your suit) and have him get you back to Earth.mfb said:Even if we ignore the scale of those charge distributions (you need a difference to do anything), neglect issues like the bad conductivity of the material, tiny energy density, mismatched voltages and so on: how do you determine which way you have to connect the battery to avoid discharging it 50% of the time?
Recharging at the moon involves using solar panels to capture sunlight and converting it into usable energy. The solar panels are then connected to a charging station, which can charge devices such as satellites or spacecraft.
Yes, as long as the device has the necessary equipment to receive and store energy from the charging station, it can be recharged at the moon.
The time it takes to fully recharge at the moon depends on the size of the device and the efficiency of the charging station. It can take anywhere from a few hours to several days.
Recharging at the moon can be cost-effective in the long run, as it eliminates the need for frequent trips to replace batteries or refuel devices. However, the initial cost of setting up the infrastructure may be high.
One potential risk is damage to the charging station or solar panels from micrometeoroids or other space debris. However, proper precautions can be taken to minimize this risk. Additionally, there may be concerns about the environmental impact of creating and maintaining a charging station on the moon.