SILLY SIGNS. . . . .LET'S START A THREAD ?

[facthunter]

A SHORT but a happy life. eh? Nev

[nomadpete]

Any recipes for polonium tea? Or is that only available in the Russian set?

[old man emu]

1 hour ago, nomadpete said:

Any recipes for polonium tea? Or is that only available in the Russian set?

The Russians are Putin time into trying to get nUk rainian rare earths.

[onetrack]

I actually had a complete lab of every type of chemical compounds, and many elements - right underneath the house!! I even made my own black powder with great success - although my thoughts didn't extend to making explosives with it, just burning it in the open air.

 

However, I had a big mad Slavic mate at high school, and he was convinced we could make nitroglycerine!!

Fortunately, our attempts to make it ended in failure, because of a lack of knowledge around the procedures and exact chemicals. 

[facthunter]

But of luck there. It's pretty Unstable. It's the active constituent in Gelignite.  Nev

[nomadpete]

1 hour ago, onetrack said:

 make nitroglycerine!!

Fortunately, our attempts to make it ended in failure, because of a lack of knowledge around the procedures and exact chemicals. 

Lucky for me nitric acid was not available to me when I was young.

 

But how times have changed.... I used to buy glycerine and kondys crystals from the chemist, and the ingredients for gunpowder from the local chemist, too.

Not any more, and that's a good thing too.

[facthunter]

Didn't need to go to the trouble of all that. There weas plenty of Gelignite, Cordite and 2 types of detonators where I grew up. When I was 8 I could get that stuff.. We blasted the Rock out to build a boatshed at Kilaben Bay.. There were Miners and ex military people everywhere..  Nev

[Litespeed]

As a former science teacher, all the fun was stolen by budgets and idiots doing dodgy lessons endangering students and even buildings burning down.

 

Public schools don't have the budgets or lab staff to allow old school exciting fun.

 

Private schools are different, some have uni level labs to go with their polo pool.

 

Quick ❓

 

What explosive 🧨 metal is soft, dull silver, cuts like butter and always stored under oil?

It's also toxic but you eat it?

 

Hint myth busters did a story on it and showed a complete lack of imagination and intelligence. For guys with a arsenal and TNT on hand they have no clue.

[old man emu]

38 minutes ago, Litespeed said:

What explosive 🧨 metal is soft, dull silver, cuts like butter and always stored under oil?

It's also toxic but you eat it?

Sodium???

[spacesailor]

As many uses as " Glycerine " .  Extracted from animal fat , when making soap from tallow .

spacesailor

[onetrack]

You'd never actually eat the pure metal, but you can eat many chemical compounds made from it.

[old man emu]

I've tried to reduce my intake of chloride of sodium. But sometimes I thirst after it.

[nomadpete]

Whilst in high school I stole a lump of sodium and a bit of potassium. I took them down to the storm water drain behind the school where I carved little bits off and flicked them into the water to watch them burn.

 

Fun, fun, fun.

[Litespeed]

3 hours ago, old man emu said:

Sodium???

Winner

 

You get the hydrogen/oxygen bomb 🏆.

 

MythBusters did the throw it into a toilet bowl with water trick to get a reaction. 

A failure of IQ. It must be flushed into a water pipe to explode. They just had a open toilet bowl and no connection to pipes.

 

The sodium reacts with water and splits the oxygen and hydrogen and makes huge volumes of explosive gas, which is contained in the sewer pipe. As the reaction oxidation accelerates it will self ignite. All that in a underground pipe makes a very powerful bomb 💣.

 

A 1 cm cube is enough to completely destroy a home sewer system. The volume of hydrogen/oxygen gas is considerable. Safer to fill a sewer with acetylene gas.

 

Yes, I have done this as a controlled experiment, on a actual sewered toilet. The house was to be knocked down.

 

[spacesailor]

I had school friends  that did a similar trick,  by dropping a bit of ' their secret ' stuff tnto drains,

Along the street.

A few minutes later the drain ' manhole cover ' would blow up into the air ! One after another .

Now I know what they used . Many thanks for enlightenment. 

spacesailor

[pmccarthy]

Carbide followed by a match will do it too.

[onetrack]

You wouldn't want to have been a sewer worker down inside the sewer network!! They have enough problems as it is, with toxic gases produced by the sewerage sludge.

 

Edited December 16, 2023 by onetrack

[Litespeed]

I think about the poor Indian guys that go and unblock sewers, no ppe, no mask, not even coveralls.

 

Normally done by the " untouchables".

 

Life really can be shit sometimes.

[Litespeed]

1 hour ago, pmccarthy said:

Carbide followed by a match will do it too.

That's cheating, no open flames allowed in a sewer.

 

But a lot easier to get carbide than sodium.

[red750]

Back to SIGNS.

 

[old man emu]

This morning two boring machines met under Sydney at Five Dock to complete the hole for a tunnel for the light rail which is to connect Parramatta to the Sydney CBD.

https://caportal.com.au/tfnsw/sydmetrowest/map

[facthunter]

Acetylene gas is not safe in quantity (It's unstable) It has to be dissolved in acetone and a porous medium  with cylinder kept upright> Nev

[red750]

[old man emu]

4 minutes ago, facthunter said:

with cylinder kept upright

Isn't the requirement to keep the cylinder upright simply a preventative method to stop the cylinder becoming a jet-propelled device if the "bung" on top fails, a la Jaws?

 

 

What's wrong with this picture?

[spacesailor]

I " Don't " think of massive " trams " . Being "  light .

Who's scales are you using. 

One group complaining of " Giant ICE SUV 's being " heavy,  when almost on par with EV suv's. 

MELBOURNE  D2 TRAM . 35.3 ton . ' that's HEAVY  ' .

spacesailor

PS . someone remarked  a " tram can weigh 30 " Rhinos " . 41 pedestrians knocked down Yarra.