Absolute and apparent magnitude of a star?

Question

Can anyone give me an equation which relates absolute and apparent magnitude of a star ?

I have a question here and have no clue on how to combine the 2 equations.

Thanks.

Answer 1

If

m=apparent magn,

M=absolute magn,

p=parallax in arcsec,

m-M= - 5(1+ log p)

Answer 2

I solve all my problems by putting my friends in blocks of cement

I think you should to

Answer 3

i dont think its difficult

try also the math section but give them the two equations

EDIT give us the two equations to try

Answer 4

Your eyes perceive equal ratios of intensity as equal intervals of brightness. On the quantified magnitude scale, a magnitude interval of 1 corresponds to a factor of 1001/5 or approximately 2.512 times the amount in actual intensity. For example, first magnitude stars are about 2.5122-1 = 2.512 times brighter than 2nd magnitude stars, 2.512×2.512 = 2.5123-1 = 2.5122 times brighter than 3rd magnitude stars, 2.512×2.512×2.512 = 2.5124-1 = 2.5123 times brighter than 4th magnitude stars, etc.