From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 486.1 nanometers (nm). T

Question

From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 486.1 nanometers (nm). The spectrum of a particular star shows the same hydrogen line appearing at a wavelength of 485.9 nm. What can we conclude

in progress 0
Ladonna 4 years 2021-08-22T04:36:23+00:00 1 Answers 110 views 0

Answers ( )

  1. phucdien
    0
    2021-08-22T04:38:08+00:00
    Reply

    Answer:

    We conclude that star moving toward observer.

    Explanation:

    According to the theory of doppler effect of light.

    There are two kind of shift 1 )  Blue shift 2 ) Red shift, in which

    1 ) if source of light moving toward observer so the apparent frequency of light increase( wavelength decrease ). This is which we call blue shift

    2 ) if the distance between source and observer is increase, so the apparent frequency of light decrease ( wavelength increase ). This is which we call red shift.

    Here, in our case wavelength of H-star is decrease so we can say that star moving toward observer ( Blue shift ).

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )