Light entering it has a longer penetration depth before being bounced back out in random directions.

The average penetration depth is called the range of the ions.

For many working fluids, like air and helium, P is of order 1, so the two penetration depths are about equal.

For typical sound frequencies the thermal penetration depth is ca. 0.1 mm.

The dependence of surface dose and penetration depth on beam energy is clearly visible.

The penetration depth is typically less than that of microwave radiation.

As a result, the energy is absorbed and penetration depth is small.

Test results are generally given in terms of expanded diameter, penetration depth, and weight retention.

For a given material, penetration depth will generally be a function of wavelength.

Both effects lead to an increased penetration depth for these microscopes.