it measures rotation per minute
It will measure the engine rpm
Revolutions per minute, aka rpm.
you need a tachometer
It is not possible. Radians are a measure of angular displacement while rpm is a measure of the rate of change of angular displacement. The question is like asking to convert speed into distance.
You cannot in any sensible way. RPM is a measure of (angular) velocity whereas litres is a measure of volume. Your hard disk will have an rpm but what does litres mean in terms of the disk?
In revolutions per minute (rpm), or radians per second.
Revolutions per minute, a measure how fast something is rotating.
The speed of sound is approximately 343 meters per second (at standard conditions). There is no direct conversion from speed of sound to rpm (revolutions per minute), as rpm is a measure of rotational speed, while the speed of sound is a measure of how quickly sound waves travel through a medium like air.
The measure of speed in an engine is typically given in revolutions per minute (RPM). This indicates how many times the engine's crankshaft rotates within a minute. RPM is a key factor in determining the performance and power output of an engine.
Not in any sensible way. RPM is a measure of (angular) velocity whereas litres per minute is a rate of flow. Your hard disk will have an rpm but what does litres per miute mean in terms of the disk?
I measure the efficiency of an internal combustian engine by doing (bhp)/((displacement)*(rpm))
You can measure RPM without a tachometer by using a stopwatch to time how long it takes for an object to complete a certain number of rotations. For instance, count the number of revolutions in a minute and divide that by the time taken in seconds, then multiply by 60 to convert to RPM. Alternatively, you can use a piece of reflective tape on the rotating object and a light sensor or smartphone app that detects the flashes as it spins, providing an indirect measurement of the RPM.