Pumice is formed from volcanoes erupting violently which injects gas into the lava at the moment of eruption. The lava cools before the gas can escape from the lava leaving the small pockets within...
It might be just one of semantics. Both a fire fighting pump and a fire water pump pump water to fight fires. But don't look for the term fire water pump. And for sure don't use it. It's an "awkward"...
when there is a fire the fire engine pulls up and hopefully connects a hose to a fire hydrant and that brings water into the engine. The fire engine then pumps the water from the hydrant to the...
Calculate or calibrate?
Calculate - apart from reference to tables for the pump, impossible. Calibrate - get a stop-watch and a very big bucket, switch on and stand back.
There should be a capacity...