Definition
A unit of force in the centimeter-gram-second (CGS) system, equal to the force required to accelerate a mass of one gram at a rate of one centimeter per second squared. One newton equals 100,000 dynes.
Plain English
A very small unit used to measure a push or pull. It takes 100,000 dynes to equal one newton, so a dyne is a tiny amount of force.
Context Anchor
Seen in powerplant maintenance and engineering discussions when force is described using older centimeter-gram-second units.
Derivation
From the Greek 'dynamis,' meaning power or force. The same root gives us 'dynamic' and 'dynamometer.' Knowing the root helps because it signals the dyne is fundamentally a measure of force, not energy or mass.
Why Pilots Care
Pilots will rarely use dynes in normal flying, but recognizing the word helps prevent confusion when reading maintenance or engine theory material that discusses forces.
Analogy
A dyne is roughly the force you'd feel from a small mosquito landing on your hand — useful to know it represents a very small push, not a heavy load.
Grounding Statement
A dyne is a tiny amount of force—much smaller than the force most people think of when they picture pushing an object.
Example Sentence 1
The textbook expressed the small force acting on the diaphragm in dynes rather than newtons.
Example Sentence 2
Older powerplant manuals sometimes expressed small forces using dynes before metric standards changed.