Arcanyn wrote:

ughaibu wrote:

Arcanyn wrote:To be left with nothing, you'd need negative mass, which is a whole other thing entirely - and way cooler, if it turns out to exist.

How do you define "cooler" (or "cool") for the above sentence?

As in 'niftier'. If it exists, you could use it to do a lot of really useful things, like create wormholes and generate unlimited quantities of energy without violating the first law of thermodynamics.

Nah, for wormholes/Alcubierre drives, you'd need exotic matter, not antimatter.

I was talking about negative mass.

Arcanyn wrote:

ughaibu wrote:

Arcanyn wrote:To be left with nothing, you'd need negative mass, which is a whole other thing entirely - and way cooler, if it turns out to exist.

How do you define "cooler" (or "cool") for the above sentence?

As in 'niftier'. If it exists, you could use it to do a lot of really useful things, like create wormholes and generate unlimited quantities of energy without violating the first law of thermodynamics.

I see, thanks. So, "way cooler" can be paraphrased as "much more useful"(?)

Arcanyn wrote:I was talking about negative mass.

Yep, antimatter doesn't qualify unfortunately.

I know.

Arcanyn wrote:I know.

Ah sorry, wasn't following the thread carefully enough !

Sityl wrote:My understanding of quantum electrodynamics (an oxymoron, I know), is that a vacuum has nothing in it on average. Just like a bank account that may sometimes have 100 dollars in it and sometimes have 100 dollars overdrawn in it, but on average has 0 dollars in it. If that's the case, how does the antimatter avoid comming into contact with the matter momentarily present in the vacuum? Have I misrepresented quantum electrodynamics?

It does. Hence why they can only keep it for a limited time, the way they do this is they shield it using magnetic fields... this only protects it from matter for so long however.

As well, not @ you sityl, but I'm pretty sure I heard from somewhere that the time period is now measurable by clocks, so no I doubt it's 2/10ths of a second.

zomgwtf wrote:I'm pretty sure I heard from somewhere that the time period is now measurable by clocks

As opposed to what, metronomes? Surely, anything which measures time is a clock?

I produced some very dark matter today.

devogue wrote:

zomgwtf wrote:At first they would be destroyed immediately after being created, then they were able to trap them for 1/10th of a second. Now however they are able to trap them and keep them around much longer, not sure how much longer because the results have yet to be published.

Apparently it's now 2/10ths of a second, which I suppose is an age if you are an anti-matter scientist (or Usain Bolt).

In an interview Hangst divulged that they can trap it in lengths of time easily measured on your watch. He said they do not like to reveal numbers before they publish for obvious reasons, but I take that as at least whole seconds.

ughaibu wrote:

zomgwtf wrote:I'm pretty sure I heard from somewhere that the time period is now measurable by clocks

As opposed to what, metronomes? Surely, anything which measures time is a clock?

I assumed everyone would understand what I said to mean regular wall clocks. Do you have a regular wall clock which can measure say 1/100th of a second? I highly doubt it since wall clocks measure to the nearest second. Now since a measurement made with a device is only accurate to it's smallest measurement increment these clocks would only be accurate to seconds. Therefore my statement means that it is measureable in probably seconds, perhaps many seconds.

It's a shame you have to come in here with this rediculous trolling. Was the discussion above your head?

zomgwtf wrote:Therefore my statement means that it is measureable in probably seconds, perhaps many seconds.

Thanks for explaining.

zomgwtf wrote:It's a shame you have to come in here with this rediculous trolling. Was the discussion above your head?

What the fuck. . . . .

What's all this shouting? We'll have not trouble here.