Dyne

Dynes redirects here. For the president of the University of California system, see Robert C. Dynes.

In physics, the dyne is a unit of force specified in the centimetre-gram-second (cgs) system of units, symbol "dyn". One dyne is equal to exactly 10^-5 newtons. Further, the dyne can be defined as "the force required to accelerate a mass of one gram at a rate of one centimetre per second squared."

Dynes/cm is the measurement usually associated with measuring surface tension. For example, the surface tension of distilled water is 72 dynes/cm at 25°C (77°F).

Units of force
Newton
(SI unit) Dyne Kilogram-force
(Kilopond) Pound-force Poundal
1 N = 1 kg·m/s² = 10⁵ dyn ≈ 0.10197 kp ≈ 0.22481 lb_f ≈ 7.2330 pdl
1 dyn = 10⁻⁵ N = 1 g·cm/s² f
1 kp = 9.80665 N = 980665 dyn Acceleration due to gravity>g_n·(1 kg) ≈ 2.2046 lb_f ≈ 70.932 pdl
1 lb_f ≈ 4.448222 N ≈ 444822 dyn ≈ 0.45359 kp g_n·(1 Pound (mass)>lb) ≈ 32.174 pdl
1 pdl ≈ 0.138255 N ≈ 13825 dyn ≈ 0.014098 kp ≈ 0.031081 lb_f ft/s²
The value of g_n as used in the official definition of the kilogram-force is used here for all gravitational units.

**Units of force**
	Newton (SI unit)	Dyne	Kilogram-force (Kilopond)	Pound-force	Poundal
1 N	= 1 kg·m/s²	= 10⁵ dyn	≈ 0.10197 kp	≈ 0.22481 lb_f	≈ 7.2330 pdl
1 dyn	= 10⁻⁵ N	= 1 g·cm/s²		f
1 kp	= 9.80665 N	= 980665 dyn	Acceleration due to gravity>g_n·(1 kg)	≈ 2.2046 lb_f	≈ 70.932 pdl
1 lb_f	≈ 4.448222 N	≈ 444822 dyn	≈ 0.45359 kp	g_n·(1 Pound (mass)>lb)	≈ 32.174 pdl
1 pdl	≈ 0.138255 N	≈ 13825 dyn	≈ 0.014098 kp	≈ 0.031081 lb_f	ft/s²
The value of g_n as used in the official definition of the kilogram-force is used here for all gravitational units.

F. f. Greek δυναμις (dunamis) power, force.

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