The influence of Earth's gravity on the frequency variation of electromagnetic waves and the phenomenon of redshift are important topics in the fields of physics and astronomy.Although the influence of Earth's gravity on the frequency of electromagnetic waves is very small,precise experimental equipment and techniques can still be used for measurement.Meanwhile,the redshift phenomenon can provide important information about celestial motion and cosmic expansion.Measure the frequency of the same electromagnetic wave from different directions may find out the differences of these frequencies.So find out the rule of the effect by the Earth's gravity.Then discuss the same feature of the universe's three redshifts(gravitational redshift,doppler redshift,space expansion redshift)and the conflict with the real star redshift.
NETL
NSTL
万方数据
