Having trouble finding some of the defintions in book

[lotrsimp12345]

define the following
are these definitions correct?
and i can't find some of them in the book

1. Lorentz contraction equation
x'=x-vt

2. the selection rules for dipole radiation
?

3.the energies of the electron in hydrogen


4. 4 quantum numbers for hydrogen


5. the equation relating the parent-daughter nuclei in alpha decay



6. the equation relating the parent-daughter nuclei in beta decay


7. the relationship between halflife and the disintegration constant



8. how big is a nuclues?





9. what is the reason for energy bands in solids?





10. how many states are there in a s-band?




11. how many states are there in a p-band?






12. the energy of a harmonic oscillator

E=hv(n+1/2)


13. the energies of a particle in a 1-D box of length, L





14. define phase velocity






15.define group velocity





help would be appreciated, I know how to apply them. Thanks

 

[lotrsimp12345]

answer to #4 would be n=2, l=0 ml=0 and ms=+-1/2

 

[hage567]

and i can't find some of them in the book

Try other books. You should also get lots of information just using Google. See what you can find.

I know how to apply them.

You know how to apply them, but you don't know what they are? I'm not sure I understand what you mean.

 

[lotrsimp12345]

what exactly is an energy band. I am really confused.
From my reading i get that each s-band can only have one state correct?
and the p-band would be able to have 2 states?