John Cuthber

No. it's to stop the air pushed out from the front of the speaker simply moving round to the back. You probably do care about that because it drops the efficiency to near zero for wavelengths smaller than the speaker With a 20 cm speaker the "sound" can get from the front to the back at about (1.5Km/sec) in something like 100 µseconds. So, only frequencies higher than about 10KHz will actually be radiated efficiently. Were you planning to broadcast to underwater dogs and bats? There's another issue. The speaker is designed to work in air. It's built to be strong and heavy enough that the speaker frame (magnet+ mountings etc) stay still and the (very light) air gets pushed around. However, under water it will be trying to move essentially the whole pool full of water (the water's practically incompressible so it cant squeeze it- it has to shove it out of the way). What will happen is that the speaker diaphragm will stay still and the rest of the speaker will move.

I didn't mean butane, I meant the petrol type stuff. It's not clear from the OP but My guess is that Elite Engineer steam distilled the stuff in the first place. If that's the case, then guess what will happen if you try to boil off the water.

The fuel used for cigarette lighters is a fairly good solvent for this sort of thing. A centrifuge isn't going to work unless there's enough eugenol that it's present as drops, rather than solution. Salting it out might work..

I suspect that some of his latest "not gaffes" rather lost him the women voters. Still, if he stands as an independent and splits the republican vote that suits me. The interesting bit will be if he holds the party to ransom by threatening to do so if they don't support him. re. " and now Overtone will correct me and say that it wouldn't be the first time " What's to correct? You said it.

Well, you seem to have slightly contradicted yourself but no matter. Since there are contemporary records it seems that they did hold broadly the opinions they said they did. (which means it's not setting the bar too high). The fact is we will never know what would have happened if they dropped the 2nd bomb on an uninhabited forest somewhere just to prove the point. One possibility is that it might have failed to go off and thus given our enemy a lot of data about the bomb. Another is that they might have gambled (correctly) that we only had two bombs and carried on fighting leading to further loss of life. or maybe- given a couple of weeks to realise just what they had already been hit with, they would have surrendered without the 2nd bomb ever being used. hindsight is 20 20.

In a very real sense, I wish you had two. If one group sets out heading 5 degrees east and the other 5.0001 degrees east, it isn't long before they lose sight of where west is.

No. The evidence comes first.

Do you know why they put speakers like the first picture into cabinets like the second one? If not you might as well give up on trying to design an underwater speaker system.

So, you choose to compare capitalism with a tin-pot8 dictatorship. OK, that will probably make it look good, but... * presumably Stalin would prefer to call it a steel pot.

OK let's start with the straw man claim. "Would you tell us why you believe that no metal has ever been heated to 1000 or 2000°C" it's a straw man since I don't believe that, nor suggested that I did (in fact, i said the opposite). Not worthy of a reply except to point out that it's a breach of the rules. Re. "how do you imagine the Pidgeon process makes the magnesium we use?" No problem. From https://en.wikipedia.org/wiki/Pidgeon_process "The atmospheric pressure boiling point of magnesium metal is very low," But this talk of magnesium, copper and so on is a bit beside the point. Can you show me where someone vacuum distils either silver or tin on a commercial basis? Also, can you suggest something that the still could be made from? ​Remember it has to have considerable strength at very high temperatures and also not be attacked by the molten metal mixture in it (That's significant- hot metals are often rather good solvents for other metals. I'm not saying it's impossible- but I suspect that most things that would meet the criteria are more expensive than silver

You can only tune in and listen to an expected signal so... Unless I'm mistaken they are broadly politicians...

At 30 metres the cabinet will be crushed.

Have you heard of jamming? TenOz's post would be a lot more convincing if it was contemporaneous. It's a collection of quotes saying what people say they thought. But it doesn't necessarily reflect what they said and did at the time.

Are you saying that the US should have sent a message to the people of Japan? How? Why would they have believed their enemy?

Part of the answer is that the Japanese authorities tied to pretend that the first bomb hadn't happened. If the second bomb fell in unoccupied forest then that would have been much easier to "hush up". (I'm pretty sure I'd have done the same thing as the Japanese govt did- I don't blame them, but it did lend support to bombing a second city.)

I doubt the people affected were greatly concerned that their deaths were as part of a military target or as a way for the military to demonstrate their power.

A city is a military target; ask the people in London or Dresden.

Charge two capacitors (or batteries) in series then connect them in parallel. Of course, doing this electronically and fast enough is another matter.

You seem to have invented the idea of putting someone in a big microwave oven. Dreams are not real.

True. On the other hand, how Capitalistic is it for the government to spend vast amounts of the taxpayers' money on running an army? (ditto the military /industrial complex). Using tax dollars t fund huge research projects like the "tube alloys" project is hardly a "small government" policy. So, the defeat of the Germans in WWII and of the Soviet Union decades later can't be viewed as capitalist.

Since the "revenge" idea only works if there is overwhelming force (i.e. "Even if you knock out 90% of our missiles we will still be able to reduce the whole of your country to glowing wasteland") you do (bizarrely) need a stupid number of the things.

He may have felt that he needed to try and sort out the mess that Bush had made of the economy first. You can't do everything first.

Because, if the regulations make it difficult for daddy to get a gun, he won't have one for junior to steal and take to school to shoot the place up. Did you really need someone to explain that to you? Whatever. Now that it has been explained, does that address your view that "This is the one reason why I do not agree with more gun control. It is a good idea in theory, but I do not think it will help at all.". I hope so, because, you should now see that gun control is a good thing. the "One reason" that you didn't agree, isn't valid. As iNow pointed out, it's not going to make all gun related problems go away. But it will reduce them.

The religious "laws" about what you can eat are not so much about food hygiene as about distinguishing "in group" from "out group". If eating pork was a bad idea then the Chinese would be extinct; as it happens they are rather numerous. Leviticus almost certainly didn't know about ebola. Presumably, he "missed the right to speak intelligently on the subject." Since much the same would be true of the author of Deuteronomy, the thread's pointless. in a world where many or most people were frequently ill, it would be substantially impossible to distinguish ebola from other diseases, never mind get a handle on what caused them. A colleague of mine is currently out in Sierra Leone working with the international relief effort. His role is to check blood samples for ebola (and also malaria since they might as well treat that when they find it). The point is that, even in a situation where people do know about ebola- it takes laboratory testing to confirm that it's the cause of sickness. So it's silly to imagine that people could identify the cause of it 4000 years ago or whatever.

look who comes second; do you really think that's a coincidence?