What is meant by one shift ?

What is meant by red shift and blue shift?

What is meant by one torr of pressure ?

What is meant by one oscillation of a simple pendulum ?

What is meant by chloride shift?

What is meant by chloride shift ? Where does it occur ?

What is meant by lateral shift ?Explain for a given slab,what is the quantity that determines lateral shift?Obtain the expression for lateral shift for refracion throug a parallel sided glasss slab.

What is meant by one-one function?