John Cuthber

No, it's not. Submarines get squashed to a measurable degree- some would say an alarming extent- even when they are working properly. I suspect he did it because he enjoyed it. It will if it leaks at all. Is there any point? Has anyone said the victims are not the "right" people? DNA will confirm the identities of any bits of body that they find. I guess that's useful in terms of labeling a coffin but I imagine the victims will be considered "lost at sea". Anyway, I predict further empty speculation.

I see another problem. Why poison woodlice for fun?

About 12 seconds into the video, they guy explains that he says you should keep your cards in sight- which is sensible advice. But it has nothing to do with RFID, has it? If someone has your card, it's no longer in the "protective" wallet. Why did you post that video in this thread?

Nor do you. Which means that, if Sensei isn't smart, nor are you. Past evidence suggests that he's smarter than you are. And, in any event, he's right about this.

Good question. How do you intend to maintain an air supply and a route back to the surface without it? Or did you not understand that it was implicit in the requirements I specified? They already started. https://en.wikipedia.org/wiki/List_of_spaceflight-related_accidents_and_incidents So he's just stating the obvious. Just a thought; If A kills B and is subsequently jailed for life for murder, is that a bad outcome? Actually, you sometimes can- as long as you make it 10 times thicker than it needs to be. For a one-off design, overdoing the glue makes more economic sense than building a clean-room etc. ... just as long as you get the sums correct. People seem to overlook teh fact that this sub dived successfully before. The problem wasn't raw strength, but fatigue resistance. To a very good approximation, nothing ever fails in straight compression. Failure of stability.... not very rare.

The bits that haven't already been tested by a million game players? It's a bit beside the point. The game-boy didn't include an "implode" function. In theory the only things that are "critical" are Maintaining air and getting back to the surface. They had at least one "get back to the surface" mechanism that was independent of that controller and the controller had nothing to do with the air supply.

At 20 bucks, and well under a kilo in weight, why not just take a spare?

How many other systems were as well tested as a game controller?

Some people are citing this as an argument against diversity. Those are the people that don't realise that "everyone is young" is no more diverse than "everyone is old". They aren't helping. Interestingly, they also searched the surface of the sea quite intensively in spite of the fact that ... that's not where submarines "should" be. An application of this algorithm https://en.wikipedia.org/wiki/Streetlight_effect

How come nobody but you has noticed?

Thank you for your anecdote. Sorry to hear that the company is struggling.

Because it is impossible to give a meaningful answer to the OP's question. Because it is potentially helpful to you if we point out that your reply, while well intended, was wrong.

You could sell that. But... how would you advertise it?

If you get this wrong, what happens to the dog? Tar is a mixture of many materials. If you didn't add anything to the stuff you distilled from wood then it's pure tar. How could you purify something that's pure to begin with?

If you can avoid the use of a solvent then you avoid teh problem of having to remove it, so warming the material up is good- if it works. If you add an alcohol it will probably act as an emulsifying agent which makes things harder. (The ammonium salts mat do this to some degree anyway.) What are you seeking to achieve?

It wouldn't. But if the tar is viscous then dilute acid will also fail to extract the amines from it. You dilute the tar, extract the amines and then remove the solvent.

How viscous is the tar? It might be easier if you dilute it with a solvent that you can remove later. Maybe cigarette lighter fuel.

Come to think of it... https://www.simplymedsonline.co.uk/cardiovascular/glyceryl-trinitrate-500mcg-tablets-gtn.html Other suppliers of volatile liquids in pill form are also available.

It's quite commonly what causes the problem in the first place. How do you put a fairly volatile liquid in a pill?

The ball is a capacitor- that's what it's for. And; fast as lightning, you worked out what the issue is.

What evidence do you have that the current is low? What would limit it?

As a rule those are not independent variables. Ohms law tells you how to calculate on from the other. Does anyone know why this myth persists? Why not? Twelve volts is twelve volts.

Eventually, you will end up with the big tank full of gas at the vapour pressure of the liquid in the small tank. So you can't transfer all of it, but you can get very close. On the other hand, getting very close would need you to use liquid nitrogen or something to cool the small tank. Not only is that uneconomical,but you risk embrittling the steel.

What's obvious is that only one of us is a chemist. But, back at the topic; iron rusts perfectly well in the dark, but not in the absence of oxygen. The ultimate reason why things degrade is entropy. https://en.wikipedia.org/wiki/Entropy

https://en.wikipedia.org/wiki/Daedalus Sunlight is pretty good at damaging organic materials, but doesn't usually harm metals (which reflect it- that helps) and inorganic materials.