emcelhannon

I grow bismuth crystals to make sculpture and jewelry. Every time I melt, I lose a bit to oxygen on the surface. I've collected enough slag to prompt the question. Can I reduce this efficiently to offset my $22 per lb for the new stuff?

Thanks for considering my problem.

Ernie

I thought I'd post this here. I'm pleased with the results.

https://www.etsy.com/listing/98130033/fathers-day-gift-express-shipping

The superconductor you bought is likely Yttrium Barium Copper Oxide , YBa(2)Cu(3)O(7), popularly known as YBCO. These are cheap and have a Tc of about 90K.

I can't find a disk for less than $40.00. Can you direct me somewhere. Also, I found this add for a class on high temp sc.

http://www.training-classes.com/programs/03/55/35559_introduction_to_high_temperature_superconductors.php

One of the items on the sylabus is "how to make a simple sc from scratch using readily available materials." I would really like to do that. Does anyone here know how to make ybco or some sc from scratch, even if it costs a little more?

boris, most compressed gas companies will give you as much as you want, the only thing is though, they dont give it to you unless you have a suitable container. like a dewar flask. and those are like...100+ dollars. also, dont store it in anything with a closed cover. ]

We've got a company called Scott Gross that will sell, but I need an appropriate dewar. I coundn't get a straight answer on what appropriate is, except that it's labled. I doubt it's labled "appropriate." I could use some sources for buying the cheapest possible "suitable" dewar. I've tried ebay, but I can't find anything with a lid for an afordable price. They won't sell it to you if you only have a lidless flask, will they?

I can spend right around $100. I expect a challenge, at that price.

It doesn't have to heal for you to post pics, Rodg. It may have swelled up. Did it mutate? Did gangreen set in? Myonecrosis would be cool. You can post those too, dude.

Not yet, but give me a week. Thanks for the response. That's just the kind of information I was looking for.

Is spin just a substitute for an unknowable quality in elementary particles? I just assume color is. How is spin possible in something fundamental. Are there actual surface features on or around a particle that literally rotate around it?

Hey Roger,

You going to post those pics or what? I want to see how the hole is doing.

only up to the limits of the strong nuclear force. however, the energy expended in getting the quarks that far appart means that you've put in enough energy for a quark anti-quark pair to form leading to you having no free neutron.

Thanks Alien,

That's an interesting thing I never knew.

I'd like to know more about the strong nuclear force and what it's limits are. I've never heard of a force increasing with distance, and I wonder if it's possible to know why.

I don't understand the excessive amount of energy leading to no free neutron, either. Could you explain that too.

Has a quark ever existed or been detected indepenent of neutron or proton?

Alright, Roger. Try this. Shoot yourself in the thigh where the bullet has to go through much more tissue. If it doesn't mushroom then, I'd probably stop buying them.

Let me know how it turns out.

About the bullet filling with air, I"m baffled. Surely, air doesn't spread them. Why didn't the bullet mushroom? Was it defective? Maybe not enough resistance?

Take it back to guy who sold it to you, and demand a refund. He'll get a kick out of that.

 

i have lost feeling to the top of my toe but they arent sure if its going to be permanent

You've got 9 more, dude. Don't sweat it.

I don't know what these women are worked up about. It's a mere flesh wound, Roger, and I think your feet are "dead sexy!" Posting the pictures so we can track the healing process is a very cool idea. You might consider shooting the other foot so you won't walk with a limp.

Forget the healing process. I want to see you squirt water through your foot.

As far as being a risk taker goes, this is the best thing that could happen to you. The same is true with your first wreck that does no permanent physical damage, (The psychological damage turns out to be very valuable).

My Dad used to call it getting a "practical education." A quick glance into epistimology, will show you there is a vast difference between symbolic knowledge gained in a class and spatial behavior learned by experience.

Among my research papers in education, one argued that you can't teach behavior, (using the traditional understanding of teaching). Knowledge is gained by learning via letters/words/symbols. Behavior must be inspired.

Your knowledge didn't prevent complacency, so by shooting your foot, you've inspired yourself. Ha. By posting them online, you're inspiring us. Our behavior will be modified by the pictures far more than by the words criticizing your actions.

Good show, Roger. It's probably not too late to squirt water through it. What's the worst that can happen?

You're a philosopher, dude. You live to waste time, but I guess you'll waste it doing something else, then.

You might like Dexter. Pure fiction, but it'll satify your apitite for philosophy and blood.

Here I am.My favourite is Oxygen.Come on! the reason is so obvious to all of us who's lives depend on it. I find it simple,nice,harmless. able & ready to intervene where life lacks. But it won't coz any harm if I also add that Hydrogen may take the place of the Queen in that kingdom. Together they make an unbreakable pair; enigmatic and challenging!...

I like your style, but the required elements to support life are more numerous that a full court can support. I especially like your anallogy of King Oxygen haveing two queens...kinky.

I stand by my vote for bismuth.

I want a biohazard t-shirt anyway. can you help a brother out?

I have to say, by far, the coolest t-shirt would be the biohazard. It's one I would wear without feeling like a pretentious intellect. It doesn't say, "look at me, I'm smarter than you." It's more of a declaration. "I like to take risks."

Is this accurate?

Is this from one of your respected critiques who have lead you to the volumes of books you so enjoyed?

How about "Dragons of Babylon"? Does anyone, (who has read it) have an opinion to offer?

"Speed" is distance per time, by definition. Hence "speed of time" taken literally is meaningless. As a figurative expression, it's more defensible.

 

It's not really as simple as a unit conversion, either. Distance and duration are inextricably linked, but they're not synonyms.

When viewing something in motion, we observe its speed through space in relation to our own position, (distance x time). We will observe the speeds within that something as slower than our own. This difference adds a new quantity to be measured, (the difference in the rate of change between things in relative motion).

So we end up with speeds of speed, and the faster one is, the slower goes the other.

The speed of light is not a unit. It is an absolute quantity that is divided into units. Each unit, however, can be regarded as a fraction of space or time. When it is regarded as a fraction of time, what better word should be used to define it than "speed?"

Dimensions in this case are mathamatical abstractions. You need four numbers or pieces of information to attend a meeting or exist at all. Say you have a meeting on the third floor on the corner of 5th street and 47th avenue. An element of special relativity is that you also need a 4th number, which is time. He says that space and time are connected in the way that the 1st,2nd and 3rd are to each other and coined the word "spacetime." The relationship between time and the others is a special number, which is "c."

I believe that is a quote from Einstein. The speed of light is the speed of time.

????

Time is the 4th dimension. Think of 187K miles per hr is the angle in which it extends. Is that a decent analogy? I think I like it.