Random Questions Mega Thread v1.1

[Titan2]

Originally Posted by RichieRich

Gotta nerd out briefly here…
Do your PV=nRT thermodynamic equation
Check pressure rating of said canister
You’d be surprised how hot it needs to get before it goes boom

For a brief rabbit hole experience on exploding canisters (such as propane tanks and cylinders) Google BLEVE

Nice try mr. phising attempt. I google that and the CIANISTFBINSA burst in my doors and take away my computer.

[MoneyGuy]

Any advice for teaching a nine-year-old how to play chess? We’ve had one game and I basically threw the game. I had him mated in six moves but explained his mistake and didn’t do the mate. He had a slight advantage on points (5 for a rook, knight 3, etc.) but lost interest. His moves made no sense, moving a piece then two moves later back to the same position.

I get that he’s only nine. He’s playing online against a computer. His ninth birthday is actually Sunday and I’d like to get him his first chess set. Maybe he’d be best off playing the computer opponent for a few weeks so he can gain experience. Or maybe have him watch his dad and play a game explain strategy. He’s bright so he’ll be good - eventually.

[Locke]

Originally Posted by MoneyGuy

Any advice for teaching a nine-year-old how to play chess? We’ve had one game and I went really easy on him (basically threw the game). He had a slight advantage on points (5 for a rook, knight 3, etc.) but lost interest. His moves made no sense, moving a piece then two moves later back to the same position. I get that he’s only nine. He’s playing online against a computer. His ninth birthday is actually Sunday and I’d like to get him his first chess set. Maybe he’d be best off playing the computer opponent for a few weeks so he can gain experience. Or maybe have him watch his dad and play a game explain strategy.

Probably check out the Chess thread.

One thing I discovered early is...I suck at Chess. I'm just really bad.

[MoneyGuy]

Originally Posted by Locke

Probably check out the Chess thread.

One thing I discovered early is...I suck at Chess. I'm just really bad.

Didn’t know there was a chess thread. I’ll do that.

[Locke]

Originally Posted by MoneyGuy

Didn’t know there was a chess thread. I’ll do that.

I'm usually good at strategy games but for whatever, I just suck at Chess.

I think theres even a CP Chess club? Contact Slava, I think he knows about it. Yeah, theres a thread and everything.

[Fuzz]

Battle Chess kept me interested as a kid.

[Wormius]

Do all sizes of Raisin Bran have 2 scoops of raisins? I saw a 450g box and 1.2kg box at Coop both advertising the same thing. Do the scoop sizes vary?

[Wormius]

Originally Posted by Fuzz

Battle Chess kept me interested as a kid.

Star Wars Battle Chess was pretty cool. It was a golden era for games. Lucas Film, Sierra, Apogee..

[PepsiFree]

Originally Posted by MoneyGuy

Any advice for teaching a nine-year-old how to play chess? We’ve had one game and I basically threw the game. I had him mated in six moves but explained his mistake and didn’t do the mate. He had a slight advantage on points (5 for a rook, knight 3, etc.) but lost interest. His moves made no sense, moving a piece then two moves later back to the same position.

I get that he’s only nine. He’s playing online against a computer. His ninth birthday is actually Sunday and I’d like to get him his first chess set. Maybe he’d be best off playing the computer opponent for a few weeks so he can gain experience. Or maybe have him watch his dad and play a game explain strategy. He’s bright so he’ll be good - eventually.

Maybe he doesn’t like chess.

[DownInFlames]

Originally Posted by PepsiFree

Maybe he doesn’t like chess.

Maybe he doesn't like MoneyGuy.

[surferguy]

Maybe he misses his old glasses?

[GGG]

Originally Posted by RichieRich

Gotta nerd out briefly here…
Do your PV=nRT thermodynamic equation
Check pressure rating of said canister
You’d be surprised how hot it needs to get before it goes boom

For a brief rabbit hole experience on exploding canisters (such as propane tanks and cylinders) Google BLEVE

Wrong equation.

CO2 is mostly liquid in the canister at the Vapour pressure. So the problem with overfilling and then raising the temperature isn’t the change in vapour pressure due to temperature.

Instead if there is no gas space for the liquid to expand into the pressure rise will be driven by liquid thermal expansion. At that point the pressure rise equation is essentially dT*alpha/compressibility of CO2.

This is one of the two common mistakes among people who refill the camping butane / propane mix canisters.

One mistake when re- filling those is not understanding that the pressure in the partially filled canister is the vapour pressure of the mixed gas. So people will say they won’t fill it up all the way if they use propane instead of butane/propane mix. Since Propane as a higher vapour pressure as soon as you start filling you bulge the canister.

The second is the above mistake of assuming the pressure in then canister when overfilled is driven by the vapour pressure of the fluid as opposed to liquid thermal expansion. 10 degrees is easily sufficient to over pressure the butane cylinders. Now with CO2s vapour pressure being about 6MPA you will have more design margin on the canisters but I’d still be very concerned with overfilling.

[PepsiFree]

Originally Posted by DownInFlames

Maybe he doesn't like MoneyGuy.

I wouldn’t either. I hear that guy goes online and brags about beating kids at chess.

[DownInFlames]

Originally Posted by PepsiFree

I wouldn’t either. I hear that guy goes online and brags about beating kids at chess.

But I bet he's dressed appropriately while he does it.

[MoneyGuy]

Originally Posted by DownInFlames

Maybe he doesn't like MoneyGuy.

I should start a club.

[DoubleF]

Originally Posted by Wormius

Do all sizes of Raisin Bran have 2 scoops of raisins? I saw a 450g box and 1.2kg box at Coop both advertising the same thing. Do the scoop sizes vary?

I don't understand why the raisin question comes up so often for people who like raisin bran. I hate raisins, but if I liked raisin bran, I'd be buying extra raisins to top up every bowl I ate.

The raisin contemplation and calculation is meaningless. Just buy extra and give'er every bowl. Or are people worried they'd be consuming some type of Special K mixture instead if they did that?

[PepsiFree]

Raisin Bran raisins are special, you can’t just top up with generic store bought raisins. Gross.

[Locke]

Originally Posted by MoneyGuy

Didn’t know there was a chess thread. I’ll do that.

I know this might come as a shock, but I do have a Star Trek 3D chess board.

No. I do not know how to play it.

[DoubleF]

Originally Posted by PepsiFree

Raisin Bran raisins are special, you can’t just top up with generic store bought raisins. Gross.

Why? Are they sugar coated and drier than regular store bought raisins or something?

[PepsiFree]

Originally Posted by DoubleF

Why? Are they sugar coated and drier than regular store bought raisins or something?

They have a coating that stops them from sticking to stuff (flakes, other raisins) and yes, are drier.