Individual solar cells are somewhat difficult to solder to. Self-adhesive metal stained-glass tape makes for the easiest soldering job--the tape holds itself in place while you solder. Use electronics solder that contains 2% silver. One side of the cell is (+), the other (-).
rain check (plural rain checks) (idiomatic) Any voucher or note from a merchant to a customer to provide an item the merchant has run out of at a later date for the item's current price, or (in a more literal sense) to provide a service at a later date.
Rain which comes down like a torrent.. It simply means very heavy rain. Rain which is liable to cause flooding. Rainfall is measured in the amount that falls per hour. Any rain that falls that is greater than the average for any place by a significant amount is considered Torrential. Rain which comes down like a torrent.. It simply means very heavy rain.