The 'soft' and 'hard' refer to the energy of the x-rays used to perform the spectroscopy. Hard x-rays are higher energy x-rays than soft x-rays. Where to draw the line for when an x-ray stops being 'hard' and becomes 'soft' is rather arbitrary but most people would agree I think that x-rays of energy ~ 1500 eV and less are 'soft' x-rays and above ~ 2500 eV are 'hard' x-rays.
absolutely nothing
one is hard
what is the defference between cassette tape and hard disk
to hard
It is a difference between the hardness, generally expressed in the Mohs scale.
A hill is hard to get up and a pill is hard to get down
The hard disk is the device that stores the folders.
The difference is in the name; soft corals are soft have body ; with no bony or hard Parts
You can go to sleep with the light on...
a lot
there is no difference just grades and hard work
There's no difference other than what's on them.