Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: [Phys-l] [tap-l] X-Rays Detected From Scotch Tape

As to the hardness of vacuum needed for the production of x-rays from an
electron discharge, perhaps one could look over Roentgen's notes?

Brian W

At 07:08 PM 10/23/2008, Bernard Cleyet wrote:
On about < the mean free path of the electrons in the residual gas.
Given in the article 0.002" (~ 51 E-6 m), so go figger.

Not the best for calculation:

bc skimmed

On 2008, Oct 23, , at 14:18, Marc "Zeke" Kossover wrote:

> I wonder how hard the vacuum needs to be? 10^-5? 10^-8?
> Zeke
> ----- Original Message ----
> From: Tom Kramer <>
> To:
> Sent: Thursday, October 23, 2008 1:59:19 PM
> Subject: [tap-l] X-Rays Detected From Scotch Tape
> My wife saw this on aol:
> <>

Brian Whatcott Altus OK Eureka!