Variometrum

So, why is a variometer such an essential tool for pilots? Here are just a few benefits:

This "instantaneous indication, then lag" behavior is both a strength and a weakness. variometrum

Pull back on the stick in a glider, and you trade airspeed for altitude. The aircraft climbs briefly, but loses kinetic energy. The standard variometrum reads a joyous "climb!" even though the glider is actually decelerating and will soon sink back down. This false reading leads pilots into "thermalling" a momentary pitch-up, not a real rising column of air. So, why is a variometer such an essential tool for pilots