In these calculations we consider spherical capsules entering the cloud with a velocity of 1.5E5 m s-1, and consider that their velocity becomes homogenised with the medium when they are decelerated to 2E3 m s-1, a typical internal velocity of grains in a cloud.
Figure 2 shows the deceleration of spherical objects with radii of 35 mm and 1 mm, injected into these clouds with an initial velocity of 5E-4 c (1.5E5 ms-1), in terms of velocity vs. penetration distance as computed using equation (4), along with the radii of the various zones.
The 35 mm object is stopped in the dense core (figure 2c), but the 1 mm object can penetrate it to the even denser protostellar condensations, where both objects are stopped well before full penetration.
Originally meant to be # 1e-7 of the length along a meridian from the equator # to a pole.
fermi 1e-15 m # Convenient for describing nuclear sizes # Nuclear radius is from 1 to 10 fermis barn 1e-28 m^2 # Used to measure cross section for # particle physics collision, said to # have originated in the phrase "big as # a barn".
The value of 1852 m was # made the international standard in 1929.
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