Mythbusters

[Moses Lim]

David L. Jones wrote:

Great episode tonight!
They blew up a plane, made a remote control Police car, and shot
bullets out of a car fuse holder.
Where do I get a job like that?

One of the best ever lines I have heard, "You told us it was bulletproof..
and it is not!" I wouldn't want to be on the receiving end of that!!!

 

[dmm]

On Tue, 29 Mar 2005 14:35:59 +1000, Franc Zabkar <fzabkar@optussnet.com.au> wrote:

On 28 Mar 2005 12:30:48 -0800, "rowan194"
googlegroups@sensation.net.au> put finger to keyboard and composed:

dmm wrote:
On 28 Mar 2005 02:49:21 -0800, "David L. Jones" <altzone@gmail.com
wrote:

Great episode tonight!
They blew up a plane, made a remote control Police car, and shot
bullets out of a car fuse holder.
Where do I get a job like that?

Dave

That explosive decompression gig in the plane was real interesting
...
They had to go to some extremes to really damage the plane.

Did you notice, SBS did the Mythbusters "chicken gun" show at 5pm?

Those guys must have a ball doing those experiments ...
And they're getting paid for it too..... 8-o

I'm looking forward to seeing new episodes.

Here's a sneak preview:
http://images.amazon.com/images/P/0836220498.01.LZZZZZZZ.jpg


- Franc Zabkar

hehehheheehehehheheh

 

[Chasing Kate]

Hercules Smackbottom wrote:

On Tue, 29 Mar 2005 14:11:50 +1000, "Jim" <nonya_nospammy@spamlesserver.com.au> wrote:


Did anyone see the one about spinning CDs till they shatter?

That one works much better with a paper plate. It must be accurately centred,
then you can spin it up to 10,000 RPM. At some stage centrifugal force
will cause the paper plate to disintregate with a shattering bang.

This was demonstrated during a "science circus" when I was
in high school. Most impressive.

That's what they were doing with the CD disks. Supposedly
drives that work up to 52x are the culprit and though the
disks say they can work this fast when they had their test
rig going at 20,000 rpm the CD shattered with a bang

 

[Brad Hogan]

"Clifford Heath" <no@spam.please> wrote in message
news:1112058842.077454af55d823b9a358a286f0da686e@teranews...

Hercules Smackbottom wrote:
Kinda disappointing.

I enjoy the show, but I find it pretty disappointing that the guys
falsely project that the show is about science, and so often project
false conclusions from their tests. It seems to be an opportunity to
have fun while doing real science, but they don't even seem to know
what science is.

yeah, they often say the wrong thing, and dont get any where near doing
mathematics or doing anything other
than measuring speed and weight.

 

[Brad Hogan]

Did anyone see the one about spinning CDs till they shatter?

Yeah, they said that they cracked the CD's but then they still didnt explode
at normal CD's.


I had a cracked CD that I didnt want to play but I was going to copy it at
a low rpm's. But I forgot to lock the speed down, and it went kaboom at
40X.

The myth busters said it only happened a few times with extremely cracked
cd's..

NOT TRUE .. it can occur after a very slight crack has appeared in the
inner rim of the CD..
Once its started, the crack "runs" ...

 

[Craig Hart]

It was all buster's fault.


"Moses Lim" <hyspeed@zeta.org.au.no.spam.pls> wrote in message
news:_v82e.16411$C7.4465@news-server.bigpond.net.au...

David L. Jones wrote:

Great episode tonight!
They blew up a plane, made a remote control Police car, and shot
bullets out of a car fuse holder.
Where do I get a job like that?

One of the best ever lines I have heard, "You told us it was bulletproof..
and it is not!" I wouldn't want to be on the receiving end of that!!!

 

[Franc Zabkar]

On Tue, 29 Mar 2005 11:32:34 GMT, "Brad Hogan" <brad@pitt.comn> put
finger to keyboard and composed:

Did anyone see the one about spinning CDs till they shatter?


Yeah, they said that they cracked the CD's but then they still didnt explode
at normal CD's.


I had a cracked CD that I didnt want to play but I was going to copy it at
a low rpm's. But I forgot to lock the speed down, and it went kaboom at
40X.

The myth busters said it only happened a few times with extremely cracked
cd's..

NOT TRUE .. it can occur after a very slight crack has appeared in the
inner rim of the CD..
Once its started, the crack "runs" ...

I haven't tried this with a CD, but you can prevent a crack in a PCB
from running by drilling holes at the endpoints.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[Terry Given]

Hercules Smackbottom wrote:

On Tue, 29 Mar 2005 14:11:50 +1000, "Jim" <nonya_nospammy@spamlesserver.com.au> wrote:

Did anyone see the one about spinning CDs till they shatter?


That one works much better with a paper plate. It must be accurately centred,
then you can spin it up to 10,000 RPM. At some stage centrifugal force
will cause the paper plate to disintregate with a shattering bang.

This was demonstrated during a "science circus" when I was
in high school. Most impressive.

CD's and a dremel works pretty well too. The Dremel sander attachment
fits nicely into the CD hole. Wear safety goggles, and beware sharp
fragments. But its a great way to destroy a stack of old windows CDs.

Cheers
Terry

 

[dmm]

On Wed, 30 Mar 2005 07:08:49 +1000, Franc Zabkar <fzabkar@optussnet.com.au> wrote:

On Tue, 29 Mar 2005 11:32:34 GMT, "Brad Hogan" <brad@pitt.comn> put
finger to keyboard and composed:



Did anyone see the one about spinning CDs till they shatter?


Yeah, they said that they cracked the CD's but then they still didnt explode
at normal CD's.


I had a cracked CD that I didnt want to play but I was going to copy it at
a low rpm's. But I forgot to lock the speed down, and it went kaboom at
40X.

The myth busters said it only happened a few times with extremely cracked
cd's..

NOT TRUE .. it can occur after a very slight crack has appeared in the
inner rim of the CD..
Once its started, the crack "runs" ...

I haven't tried this with a CD, but you can prevent a crack in a PCB
from running by drilling holes at the endpoints.

I heard windscreen repairers use the same principle.

- Franc Zabkar

 

[Rod Speed]

David L. Jones <altzone@gmail.com> wrote in message
news:1112006961.543609.123600@f14g2000cwb.googlegroups.com...

Great episode tonight!

True, exposed the pig ignorance of the fools that claimed you
couldnt have armed guards on planes to prevent hijacking,
coz a bullet fired would cause the plane to disintegrate.

They blew up a plane, made a remote control
Police car, and shot bullets out of a car fuse holder.

Where do I get a job like that?

Soorree, you dont qualify.

 

[Terry Collins]

Rod Speed wrote:

True, exposed the pig ignorance of the fools that claimed you
couldnt have armed guards on planes to prevent hijacking,
coz a bullet fired would cause the plane to disintegrate.

How did they do this?

 

[Phil Allison]

"Terry Collins"

Rod Speed wrote:

True, exposed the pig ignorance of the fools that claimed you
couldnt have armed guards on planes to prevent hijacking,
coz a bullet fired would cause the plane to disintegrate.

How did they do this?

** The Mythbuster dudes got an old DC9 fuselage and pumped it up to 8 psi
internally. Then they remotely fired a 9mm handgun, mounted on a stand in
the aisle, through the side and then a window.

The bullet made neat little holes and that was all.

They repaired the holes and re-pressurised.

Next they blew a side window out with explosives - which was rather more
serious.

They repaired that too.

Then they blew the a huge hole in the side of the plane with a "shaped
charge" fitted next to where a passenger sits.





.............. Phil

 

[Alan Rutlidge]

"Phil Allison" <philallison@tpg.com.au> wrote in message
news:3b74gpF6dspfsU1@individual.net...

"Terry Collins"
Rod Speed wrote:

True, exposed the pig ignorance of the fools that claimed you
couldnt have armed guards on planes to prevent hijacking,
coz a bullet fired would cause the plane to disintegrate.

How did they do this?


** The Mythbuster dudes got an old DC9 fuselage and pumped it up to 8
psi
internally. Then they remotely fired a 9mm handgun, mounted on a stand in
the aisle, through the side and then a window.

The bullet made neat little holes and that was all.

They repaired the holes and re-pressurised.

Next they blew a side window out with explosives - which was rather more
serious.

They repaired that too.

Then they blew the a huge hole in the side of the plane with a "shaped
charge" fitted next to where a passenger sits.

Howcome you weren't in the seat?

............. Phil

 

[Phil Allison]

"Alan Rutlidge

"Phil Allison"
"Terry Collins"
Rod Speed wrote:

True, exposed the pig ignorance of the fools that claimed you
couldnt have armed guards on planes to prevent hijacking,
coz a bullet fired would cause the plane to disintegrate.

How did they do this?


** The Mythbuster dudes got an old DC9 fuselage and pumped it up to 8
psi
internally. Then they remotely fired a 9mm handgun, mounted on a stand in
the aisle, through the side and then a window.

The bullet made neat little holes and that was all.

They repaired the holes and re-pressurised.

Next they blew a side window out with explosives - which was rather
more
serious.

They repaired that too.

Then they blew the a huge hole in the side of the plane with a "shaped
charge" fitted next to where a passenger sits.

Howcome you weren't in the seat?

** A neat, round hole in your head would suit you fine.




............ Phil

 

[Alan Rutlidge]

"Phil Allison" <philallison@tpg.com.au> wrote in message
news:3b9hs6F64bd8jU1@individual.net...

"Alan Rutlidge
"Phil Allison"
"Terry Collins"
Rod Speed wrote:

True, exposed the pig ignorance of the fools that claimed you
couldnt have armed guards on planes to prevent hijacking,
coz a bullet fired would cause the plane to disintegrate.

How did they do this?


** The Mythbuster dudes got an old DC9 fuselage and pumped it up to 8
psi
internally. Then they remotely fired a 9mm handgun, mounted on a stand
in
the aisle, through the side and then a window.

The bullet made neat little holes and that was all.

They repaired the holes and re-pressurised.

Next they blew a side window out with explosives - which was rather
more
serious.

They repaired that too.

Then they blew the a huge hole in the side of the plane with a "shaped
charge" fitted next to where a passenger sits.

Howcome you weren't in the seat?



** A neat, round hole in your head would suit you fine.




........... Phil

Pointless putting a hole in your head Phil. There would be nothing to see
inside it.

 

[Clifford Heath]

John de Stigter wrote:

I doubt that firing that chicken gun ever became a chore.

I bet. Interesting to see how surprised they were to see
that their setup couldn't take advantage of 150PSI.

It was this experiment that made me realise they either hadn't
actually studied science beyond high school, weren't interested
at the time, or were too dumb to absorb it. I don't think it was
the latter.

A pressure expansion ratio of 1:0.58 in normal air yields *sonic*
flow. That's about 11 PSIg. Any additional pressure results in
airflow at *exactly* the same speed, although the massflow is
higher due to the increased density. And since the type of valve
they chose was less than 1/10 open when the chicken left the
barrel, it made almost no difference to the velocity - which they
even pointed out on the show without understanding it or asking
why. Needless to say, the punkin chunkin champion wasn't about to
disclose his secrets .

I used these principles four years ago in a science experiment
with my son where we measured the speed of sound and extrapolated
the temperature of absolute zero using an old fire extinguisher,
a couple of accurate orifices (1mm and 0.6mm), an old brass tap,
a pressure gauge, and a computer for timing. Oh, and a manual
pump. Bloody lot of work, pumping 11 litres of air to 150PSI. My
compressor was broken. Copies of our paper are available on
request, in case anyone cares to reproduce the experiment.

 

[Poxy]

Clifford Heath wrote:

I used these principles four years ago in a science experiment
with my son where we measured the speed of sound and extrapolated
the temperature of absolute zero using an old fire extinguisher,
a couple of accurate orifices (1mm and 0.6mm), an old brass tap,
a pressure gauge, and a computer for timing. Oh, and a manual
pump. Bloody lot of work, pumping 11 litres of air to 150PSI. My
compressor was broken. Copies of our paper are available on
request, in case anyone cares to reproduce the experiment.

Yes, but did you fire any chickens?

 

[Clifford Heath]

Poxy wrote:

Yes, but did you fire any chickens?

No - I was specializing in rocketry at the time .
My rocketry simulator is approaching half a million hits.

 

[Ken Taylor]

"Poxy" <pox@poxymail.com> wrote in message
news:SD95e.3082$5F3.910@news-server.bigpond.net.au...

Clifford Heath wrote:

I used these principles four years ago in a science experiment
with my son where we measured the speed of sound and extrapolated
the temperature of absolute zero using an old fire extinguisher,
a couple of accurate orifices (1mm and 0.6mm), an old brass tap,
a pressure gauge, and a computer for timing. Oh, and a manual
pump. Bloody lot of work, pumping 11 litres of air to 150PSI. My
compressor was broken. Copies of our paper are available on
request, in case anyone cares to reproduce the experiment.

Yes, but did you fire any chickens?


Why the heck would he employ any chickens??

Ken

 

[Phil Allison]

"Ken Taylor"

"Poxy"
Clifford Heath wrote:

I used these principles four years ago in a science experiment
with my son where we measured the speed of sound and extrapolated
the temperature of absolute zero using an old fire extinguisher,
a couple of accurate orifices (1mm and 0.6mm), an old brass tap,
a pressure gauge, and a computer for timing. Oh, and a manual
pump. Bloody lot of work, pumping 11 litres of air to 150PSI. My
compressor was broken. Copies of our paper are available on
request, in case anyone cares to reproduce the experiment.

Yes, but did you fire any chickens?


Why the heck would he employ any chickens??

** Cos they work cheep.





........... Phil