If a system is leak-tight but still wet, the vacuum indicator will typically show a stable reading after the vacuum pump is stopped and valved off. This is because the presence of moisture can create a partial vacuum, and as long as there are no leaks, the indicator should not fluctuate significantly. However, if the moisture evaporates or if there are any leaks, the reading may change as the pressure equilibrates with the surrounding atmosphere.
a four valved trumpet can allow the user to get different notes by pressing the different valve just like the 3 valve one
none its open valved
The grasshopper has an open circulatory system which consists of 7 tubular hearts, which are actually valved chambers. These chambers circulate haemolymph, which is the body fluid in a grasshopper's body cavities and appendages.
In anatomy, lymph vessels are thin walled, valved structures that carry lymph.
An aeropulse is another name for a pulsejet, a valved jet engine where combustion occurs in pulses.
the tricuspid valved is loated beetween the right ventricle and the right autrium.
The specifications that Cobra motorcycles hold are as follows 2 stroke, single cylinder, reed valved engines, a liquid cooled cooling system, and Autolite spark plugs to name a few.
Stölzel invented the valve and applied it to natural horns in 1814.
It's a paired, self timing (purkinje fibers), muscular, valved pump.
The chromatic keyed trumpet is a brass instrumentthat, contrary to the traditional valved trumpet, uses keys.
A tuba. They are sometimes referred to as a bass i.e E flat of B flat bass
The best information we have points to the trumpet being invented in Egypt. The modern valved trumpet was invented in Germany.