# What is the difference between xrays and ultra violet rays?

Do they differ in just frequency and wavelenght ? Or there is more about it

• Fundamentally, yes. The difference in frequency and wavelength causes a difference in colour, too. – Gaurav Oct 1 '14 at 11:49
• "A rose by any other name..." The history of naming different parts of the EM spectrum is full of odd stuff :-). BTW, @PhysicistByLogic please identify the "color" of X-rays! – Carl Witthoft Oct 1 '14 at 11:58
• LOL! My bad. Should've mentioned that that was the case for visible spectra. – Gaurav Oct 1 '14 at 12:34
• The frequency & Planck's constant makes it a difference in energy ($E=h\nu$). – Kyle Kanos Oct 1 '14 at 12:53
• Yes as metnioned the difference is in wavelength (or equivalently frequency) an as a result of Einstein/Planck fromula ($E=hv$) energy as well – Nikos M. Oct 1 '14 at 13:11