The Mitsubishi lamp, which is model number 915P200110, is available to purchase through many retailers. The average price for this model of Mitsubishi lamp is about 45.00$ (USD). Some retailers have this lamp for as low as 29.99$. Other retailers sell this lamp for as high as 80.00$.
The Mitsubishi 915P020010 is a TV projection lamp. It is essentially a projector, except it is inside of a TV, and is used to project an image onto the TV's screen.
A Mitsubishi DLP lamp is the Mitsubishi brand of digital light processing lamp used in rear-projection tvs and projectors. It supplies the light necessary to make the projection.
There is no way to know for certain when the lamp will die, but when the light comes on, the power to the lamp has detected the increase in current, which is indicative of a lamp that is about to burn out. I would purchase a replacement lamp and have it on hand when the bulb goes out. I would expect you will get no more than a couple of weeks use from this old lamp.
The cost of a replacement lamp for a Hitachi UX21511 would vary by retailer. One would expect to pay an average of about $50 from most online sellers.
A Mitsubishi DLP lamp varies in price depending on the model it is required for and prices may be approximately $35-$40 with DLP lamps for different models being available on Amazon.
Away from the lamp to remove hot air. This way you are not blowing unfiltered air and dust on lamp.
Your owners manual will describe the procedure.
A lamp that is turned on would be expected to emit more thermal radiation than a rock at room temperature. The lamp is designed to produce light and heat energy, whereas the rock passively absorbs and radiates thermal energy from its surroundings.
With a UV lamp you will be able to see the debris in the air.
The Mitsubishi lamps run between $70 and $100. Check around and compare prices, you also might be able to find a used one in good condition for less money.
A sodium lamp would not disappear when added to water. However the lamp would probably never be usable again.
Cheese will mold with or without the lamp.