  According to Larmor's formula, accelerated electric charges radiate
electromagnetic waves. Hence charges should radiate, if they are in free fall
in gravitational fields, and they should not radiate if they are supported at
rest in gravitational fields. But according to Einstein's equivalence
principle, charges in free fall should not radiate, while charges supported at
rest in gravitational fields should radiate. In this article we point out
indirect experimental evidence, indicating that the equivalence principle is
correct, while the traditional interpretation of Larmor's formula must be
amended.
