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.
Top definition. brake check. While driving, hitting your brakes really hard to scare the crap out of the jerk driving two inches from your rear bumper. Checking to make sure they have enough time to brake without rear-ending you (pissing them off). This guy is driving way too close to my rear bumper, time to brake check him.