Recent content by Dembara

I am just curious on this one, if you could efficiently turn matter into energy (the whole e=mc2 thing) how much energy could you get per gram?

I found this site which provides the patent numbers, and images of them.

I can't seem to see all the info on it (or I am just looking over it), could you give me the name and/or the full citation? Thank you! It looks really useful.

Is there any data base that sorts them with dates? I know the US trademark office site, but it gives all of them (and all related laws), and even under mechanical computers, it doesn't give me enough options to practically organize it.

Unfortunately, my project is primarily written (it is actually a history project, but rather open in subject matter), so I don't think that would be possible.

Weren't those in the mid-20th century (I don't recognize what you mean by organs, but the others I recognize)? For the project I am doing I can't use anything after the first world war.

Thank you, though I have already tried googling many of those (though I'll try the two I haven't being the bomb sight, and antikythera). Do you know of any specific places, or resources that tend to hold diagrams for them?

Sorry I didn't clarify. It's a large paper, so anything would help, specifically though I am focusing on stuff in the 18th-19th century (and really early 20th). Thank you! Also, that's cool, my father worked with some of the early punch cards also, when working as a professor, though I think...

I am currently working on a project on early mechanical computers; I understand the basics of how the rotor mechanisms, and whatnot work. However, I need some specific, and preferably diagrams. Most of the sources I've found refer to the broader working of the mechanism (and the implications)...

Okay, thank you for the explanation!

But don't most of those only cover gamma rays? Where as thorium releases alpha rays, which can be blocked by human skin, and are as such not (generally) dangerous (large exposure, from more than a kilo has been shown to increase risks of certain cancers). That's why its perfectly legal to own a...

Since thorium is not regulated as far as I know (though also not exactly commercially available, because of how cheap it is, and all that) and it's not particularly dangerous, even in a reactor, is there anything (other than the price/knowledge) stopping individuals from building small thorium...

Sorry I did not get back to you. I want to use a Class I as it doesn't require paperwork for the science fair (and I'm allowed to bring it to the actual fair, without going through a long process). Would attenuating the laser pointer actually change the class? I'd assume altering the laser or...

I am doing some experimentation, for a science fair. And I want to make sure I the laser pointer I use is Class I (conceivably, I may change that, but any class of laser can be used to replicate results similar to the double slit experiment correct?). Can anyone direct me as to where I may be...

I am in the same position as you, though I started looking into some Quantum physics reading as a Freshman. I found Feynman's "QED: The Strange Theory of Light and Matter," to be quite interesting and fairly easy to understand (for the topic). Here is a link to it on Amazon, and here is a link...