UV, ozone etc.

[Dam Son <son@fermi.phys.washington.edu>]

Hi,

Pha^`n lo+'n nhu+~ng ca^u ho?i cu?a a. Cuong to^i chi.u, chi? xin tra?
lo+`i nhu+~ng gi` mo^.t te^n "hu? ly'" ma` la.i la` va^.t ly' ly' thuye^'t
bie^'t.  Ra^'t muo^'n nghe ca'c ba'c kha'c tra? lo+`i ca'c ca^u ho?i co`n
la.i\. 

On Fri, 14 Mar 1997, Vu Nguyen Thanh wrote:

> Ne^'u to^i hie^?u ddu'ng thi` anh Cuong hoi ve tia UV??
> So'ng ddie^.n tu+`.  Buoc so'ng trong khoa?ng ???-2?? nhu+ng 
> 270nm thi` cha('c cha('n ro^`i.  Ca'ch ta.o:  vo^ kho^'i nhu+ng 

Ranh gio+'i cu?a tia cu+.c ti'm (tu+? ngoa.i, UV) tu+o+ng ddo^'i co gia~n,
dda.i kha'i tia nhi`n tha^'y co' bu+o+'c so'ng trong khoa?ng 400-750 nm
thi` tia UV la` tu+` 400 nm xuo^'ng to+'i 4 nm. Du+o+'i nu+~a la` tia X
(X-ray). 

On Fri, 14 Mar 1997, cuongnguyen wrote:
 
> 5. UV co' kha? nang dam xuye^n the na-o? No' co' xuye^ng qua nuoc nhu la 
> visible radiation kho^ng??? No' co' the^? xuye^n qua ki'nh ma-u 
> kho^ng??? Cuong thay trong qua?ng ca'o mo^.t ki'nh deo ma('t la- ngan 
> duoc UV B, vay thi- ki'nh loai nao ngan duoc ca? ba loai UV??? 

UV xuye^n ddu+o+.c qua nu+o+'c, tha^.m chi' nhie^`u kim loa.i, nhu+ng ve^`
ki'nh thi` to^i chi.u\. O+? VN tru+o+'c dda^y co' mo^.t so^' ki'nh ra^m
"ro+?m", cha(.n tia nhi`n tha^'y nhu+ng la.i kho^ng cha(.n tia cu+.c ti'm,
ddeo va`o chi? mo^.t lu'c la` ddau ma('t. 

So+n.