Miner's lamps (and spelunkers, too) utilize a compound commonly called Carbide. It is a lumpy product, which, when water is dropped onto it, releases acetylene gas. The gas is ignited (usually from a spark wheel mounted on the lamp's reflector) to provide light.
for diffraction grating mercury lamp is used not sodium lamp.
The time autonomy of a kerosene lamp is all dependant on the type and age of the lamp. Another big factor in the time autonomy is the size of the lamp as large lamps will either need more fuel or will not last as long.
The Benq replacement lamp is used to replace the lamp of a projector. If your projector lamp breaks or simply dies (it does after typically 10-15 years). You can replace it with a Benq lamp. The Benq lamp is only for LCD and DLP projectors.
Simple, for heating !
Methane.
carbide and water mixture
The fuel used is paraffin
The Davy lamp's flame went out when miners got to a spot where there was dangerous gas. Previously, canaries were used to do these jobs.
sir humprey
miners safety lamp Which was to be known as "The Davy Lamp"
The alcohol lamp is generally used during excursions. Alcohol is the fuel for heating.
Sir Humphrey Davy in 1815.
sir humpherry
it can mesuer how much alchohol is in you bloud
The alcohol lamp is generally used during excursions.
The alcohol lamp is generally used during excursions. Alcohol is the fuel for heating.
a lamp boy is the medium of communication between miners whose lamps have gone out or have been rendered inefficient and the chief lamp man's room in the upper world. So basically he wonders around and gets the miners a lamp that works if there's doesn't.