Overclocking on BBC

LewisStuart · 1 Oct 2009 at 19:24

http://news.bbc.co.uk/1/hi/technology/8284366.stm

Note how he talks about safety as someone pours liquid nitrogen with no gloves lol.

madindehead · 1 Oct 2009 at 19:31

For some reason, I read that title as overclocking a BBC computer

killari · 1 Oct 2009 at 20:15

madindehead said:
For some reason, I read that title as overclocking a BBC computer

HAHA me too!

Richy1204 · 1 Oct 2009 at 20:38

That guy Paul was on one of tech news sites which they had a big overclocking event day with a competitor.

bulldog147 · 1 Oct 2009 at 20:43

killari said:
HAHA me too!

I use to have that ! BBC computer ! in 1980's.

PermaBanned · 1 Oct 2009 at 20:44

So i'm not the only one...

xiphrex · 1 Oct 2009 at 22:04

Who the hell pours liquid nitrogen from one flask to another with no funnel and no gloves on?! Crazy people

Merlin5 · 1 Oct 2009 at 22:25

I thought they'd poured her a cup of liquid nitrogen tea at 00:53

hyperst · 1 Oct 2009 at 22:34

haha, she seems to be taking the mickey with them a little aswell

LewisStuart · 1 Oct 2009 at 23:18

Martin also sings "500 miles" with his brother when not overclocking.

rjk · 2 Oct 2009 at 00:16

pah

kylew · 2 Oct 2009 at 00:42

xiphrex said:
Who the hell pours liquid nitrogen from one flask to another with no funnel and no gloves on?! Crazy people

Because people are too paranoid about liquid nitrogen.

It's not like how it's depicted in the movies, it doesn't freeze on instant contact, it can take a while and it takes quite a bit.

For someone to freeze their hand, they have to submerge it in to a large amount of it and keep it there too.

jmc007 · 2 Oct 2009 at 01:13

So if it poured on your hand it would do no damage?
Ah, one google later I learn of the "Leidenfrost effect"
That reporter was definately taking the Michael though.

clv101 · 2 Oct 2009 at 09:15

jmc007 said:
So if it poured on your hand it would do no damage?
Ah, one google later I learn of the "Leidenfrost effect"
That reporter was definately taking the Michael though.

I've poured it over my hand in the past. It boils off leaving a insulating layer of air between liquid and skin.

Mr Paul · 2 Oct 2009 at 11:04

Correct, I use LN2 on a daily basis as work (I'm an analytical chemist).

You can pour it on your hand and while it will feel cold, an insulating layer of nitrogen will form between your skin and the LN2.

But only for a short time mind and the nitrogen layer will soon become cold

But yes, don't believe what you see on the big screen.

clv101 · 2 Oct 2009 at 11:14

I guess the problem is if it gets trapped against the skin, in a cuff of a glove, against the interface between finger and whatever you're holding etc. Gloves are certainly to be recommended!

norm · 2 Oct 2009 at 17:30

If liquid nitrogen boils at -196c why doesn't it simply disappear when exposed to room temperature?

killari · 2 Oct 2009 at 18:53

norm said:
If liquid nitrogen boils at -196c why doesn't it simply disappear when exposed to room temperature?

Its been a while since I studied physics, but I think its related to ambient temperature and the specific heat capacity of the liquid nitrogen. It takes time for the sufficient (heat) energy to transfer over to such a point that there is enough for a state change to occur and this increases as you increase the volume/mass/amount of the substance in question increases.

clv101 · 2 Oct 2009 at 19:18

norm said:
If liquid nitrogen boils at -196c why doesn't it simply disappear when exposed to room temperature?

It does, the same way a bowl of water dissappears when left in your oven at 200C.

EffBee · 2 Oct 2009 at 20:40

jmc007 said:
So if it poured on your hand it would do no damage?
Ah, one google later I learn of the "Leidenfrost effect"
That reporter was definately taking the Michael though.

A party trick of mine in the physics labs at University

Musn't use too much though.