The melting point of a solid is the temperature at which it changes state from solid to liquid at atmospheric pressure. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends on pressure and is usually specified at standard pressure. When considered as the temperature of the reverse change from liquid to solid, it is referred to as the freezing point or crystallization point. Because of the ability of some substances to supercool, the freez
TV manufacturers say that most DLP rear-projection television lamps last between 1,000 and 2,000 hours. However, these burn-out times vary and can range quite a bit. Some lamps last only 500 hours, while others can last 8,000 hours or more. Much of a lampâs life span is based on its usage. On average, most lamps are replaced every one to two years. Lamp replacement costs vary widely and depend on the lamp and its manufacturer. A quick Internet search or phone call to the manufacturer can pinpoint how much a particular projection lamp costs.
Moderator. Each lamp will draw about 1 amp (12W/12V = 1 amp). 2 lamps will draw about about 2 amps, and running for 1.5 hours, that will be about 3 amp hours. There are still a few unknowns here: Your discharge rate is closer to a 10 hour discharge than 20 hours, so you're 33 AH battery will actually be somewhat less.