Specific Impulses

Some articles on specific impulse, impulse, specific impulses:

Specific Impulse - General Considerations
... If mass is used, specific impulse is an impulse per unit mass, which dimensional analysis shows to be a unit of speed, and so specific impulses are often measured in meters per second and are often ... if propellant weight is used instead, an impulse divided by a force (weight) turns out to be a unit of time, and so specific impulses are measured in seconds ... is the negative of the momentum of the exhaust gas.) See also change of impulse of a variable mass ...

Famous quotes containing the words impulses and/or specific:

    The political truths declared in that solemn manner acquire by degrees the character of fundamental maxims of free Government, and as they become incorporated with national sentiment, counteract the impulses of interest and passion.
    James Madison (1751–1836)

    The more specific idea of evolution now reached is—a change from an indefinite, incoherent homogeneity to a definite, coherent heterogeneity, accompanying the dissipation of motion and integration of matter.
    Herbert Spencer (1820–1903)