Re: Green laser pointers (fwd)

["High Voltage list" <hvlist@xxxxxxxxxx>]

Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Mon, 2 Jul 2007 09:46:29 +0100
From: James Howells <james@xxxxxxxxxxxxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Green laser pointers (fwd)

I use the  keyboard language  button :at the bottom right of the tool bar 
,to change from English United Kingdom ( EN)  to Greek { EL} to get round 
the problem with scientific symbols .... one click and you are back to 
English

Hope it's useful

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----- Original Message ----- 
From: "High Voltage list" <hvlist@xxxxxxxxxx>
To: "hvlist" <hvlist@xxxxxxxxxx>
Sent: Monday, July 02, 2007 3:01 AM
Subject: Re: Green laser pointers (fwd)


> Original poster: Steven Roys <sroys@xxxxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Sun, 1 Jul 2007 06:30:08 -0700 (PDT)
> From: Mike <megavolts61@xxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Re: Green laser pointers (fwd)
>
> Hi Pete,
>      I think it is probably due to the energy of the light  being  E = hv 
> , where h is Planck's constant and v is the frequency  (sorry I don't have 
> Greek symbols on this keyboard, so I have to use a v).
>  Mike
>
>  What I want is a nitrogen laser for UV  I used to have one, but gave it 
> to a friend when I moved.
>
>  Steve, or anyone else...,
>
> I've always wondered why they can make such hi-powered green
> lasers, but not red or yellow ?
>
> -Pete Lawrence.
>
> [I'm not sure about that, so any laser physicists on the list are
> encouraged to chime in.  I do know they have solid state UV lasers in the
> multi-watt range, but they're beaucoup bux. SRR]
>
>
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