In article , Rupert wrote:
"K" wrote in message
...
sam writes

Pulses make their own nitrogen

Wow! That's impressive ;-)

Do not be so critical --he got it slightly wrong.
Nitrogen lasers produce intense pulses

We have some of those lighter-than-air party balloons that have
remianed floating for over a month now - most impressive, as the
older ones used to flop after a day or two.

A friend said that this was due to the use of specially long
lived helium.


Regards,
Nick Maclaren.