I am now study High Dipolmia in Applied Physics in PolyU.
all sciences students in HKU need to take 1 or 2 phy or chem courses.
there are A LOT of female students in HKU.
they declare major AFTER they have been admitted.
all sciences students in HKU need to take 1 or 2 phy or chem courses.
there are A LOT of female students in HKU.
they declare major AFTER they have been admitted.
because the subject you mention is 14 in 1 science subject.
Actually, a beam of light "has" many photon(a kind of particle)
and if there are many photons which is intense, coherent, monochromatic and unidirectional beam of light.
That will be laser.
(as I cannot find my notebook, I can only copy the above words from my physics book, if I can find my notebook, I wish that I can type an explaination that is easier to understand)