# Search results

1. ### AC vs DC and the flow of electrons

So I should clarify that I'm not asking this to try and understand any deeper concepts like wave duality etc, simply so that I have a better understanding of the basics. I guess in my mind I still don't feel like I'm seeing the whole picture. Let's take an experiment as an example. 9V DC...
2. ### AC vs DC and the flow of electrons

Hi All, I'm trying to visualize the flow of electrons in an AC circuit. DC is pretty simple as I can imagine the electron moving from point A to B. AC on the other hand confuses me. If there's a constant switch of polarity one would imagine that the electron would move forward as the...
3. ### What a resistor can handle

mmm ... thanks. So what you're saying is that given a box of resistors there's no way of knowing?
4. ### What a resistor can handle

Hi Guys, Given a resistor, I understand how to use the bands to calculate the resistance, but how does one tell what the resistor is able to handle. For example, I have a 51ohm resistor that I connected to a DC power supply. At 5V all was fine, but when I increased the voltage to 10V the...
5. ### Water and Flux

Flow meters are pretty expensive and require you to break the circuit if it's not pre-connected. This is more about, can it be done than a, is it the best solution question.
6. ### Water and Flux

Hi All, A friend and I were recently considering the idea of measuring water flow in a fire hose, buy measuring the flux generated by the water moving through the hose. Neither of us are scientific by any means, but I've been trying to research the idea and have not gotten very far. I...
7. ### Earths gravity

Good point, I hadn't thought of the moon as a satellite. Much of this came about due to an argument a friend and I were having about getting to Mars. Thought was that it's not that much harder to send something to Mars than it is to send something to the moon. My view was that once you've got...
8. ### Earths gravity

Thanks Janus, That's very helpful. It looks like the highest satellites that we put into orbit are GPS satellites and fall somewhere between 6,000 - 12,000km above the Earth surface. At what distance does gravity become so week that the it stops falling around the Earth? One would...
9. ### Earths gravity

Hi Guys, I'm trying to gain a basic (and I say basic because I'm not much of a math buff) understanding of what kind of force it takes to launch a rocket \ satellite into space. From my basic reading - "space" is classified as 100km above Earth's surface. What I'm trying to figure...
10. ### Digital Modulation onto Electromagnetic waves

Hi Guys, I was hoping someone could explain why commercial satellite uplinks (like those used in TV broadcast) are able to achieve such high bandwidth rates vs. radio uplinks like HAM OSCAR uplinks. I don’t completely understand how digital modulation is done onto radio wave, but at 1st...
11. ### News Fiasco: The American Military Adventure in Iraq

I'd like to take a moment to point out something that I find interesting. The majority of the people who take the time to post here are people who are willing to look beyond what the media feeds them and generate more intelligent discussion\opinion. I think the majority of people feel that...
12. ### News Fiasco: The American Military Adventure in Iraq

Thanks for posting this Cyrus! For those who care to watch the show instead, you can google "Thomas Ricks" @ http://video.google.com. http://video.google.com/videoplay?docid=-4926293608118312619&q=Thomas+Ricks [Broken] I'm watching it now. Thanks Warrick
13. ### News Uzbekistan shocking information

I could not agree with you more.
14. ### News Uzbekistan shocking information

Thanks, I did not think I'd found the correct person when I read the bio. But it seems you're correct http://en.wikipedia.org/wiki/Harry_Belafonte. Although I would not sum it up quite that fast, he seems to have been quite a activist of the years.
15. ### News Uzbekistan shocking information

That's a good point, I'd not look at who the Judges were and I'm not blown away by the list. I did think that the two speeches given by Harry Belafonte and Michael Ratner were very good though and really got me wondering if this is some form of patriotic treason that the general public is guilty...
16. ### News Uzbekistan shocking information

What he's basically saying is that the US is purchasing information from Uzbekistan knowing full well that they are torturing people for the information. So I'm interested to know if: A. People believe what Craig Murry has to say, and if now why. B. What the implementations of this would be...
17. ### News Uzbekistan shocking information

I was pretty shocked listening to this, and was REALLY hoping that someone in the group would have some logical argument. http://www.bushcommission.org/Audio/Craig_Murray%20Testimony.mp3 [Broken] http://www.craigmurray.co.uk Thanks Warrick
18. ### Good Deed

Obviously the results of what I found and the history of what he has achieved is what impressed me. But thanks the the invaluable input :)
19. ### Good Deed

Wow, good choice. I'd never heard of the guy, but a quick Google has earned Dr. Yunus a lot of respect in my eyes.

23. ### Biophoton emission from DNA

And another http://dsc.discovery.com/news/briefs/20050905/handlight_print.html
24. ### Biophoton emission from DNA

Thanks Moonbear, but I don't want to be that quick on the draw. I read some of the notes at the back of the book and found some of his sources. So of the research he points to is done By Ho and Popp which seem to be a German research group, looking into the practical use of Biophotons...
25. ### Biophoton emission from DNA

I admit it's not the most reputable souce, hence why I'm asking. I read this stuff like fiction, but I'm wondering what truth there is to the electromagnetic field that is discharged by DNA. The book that got me curious was https://www.amazon.com/gp/product/0874779642/?tag=pfamazon01-20 If you...
26. ### Biophoton emission from DNA

Hi Guys, I've read a couple random pieces on Biophoton emissions from DNA and was quite interested in the topic. There seem to be quite a few suggestions that this could be some form of inter cell communication system. Before I waste a lot of time reading the wrong material I was hoping...
27. ### Cold = Sick?

Ya I guess that makes sense, but I guess I was interested to see if there had ever been any real studies done on the topic. I know there are some things that just make sense and are not worth researching, but considering I have a cold and there's no easy way to kick it, it seemed like a good...
28. ### Cold = Sick?

A friend of mine were discussing the cold weather and how everyone's getting sick. I was then trying to figure out why exactly people to tend to get sick when it gets cold? I'm sure there some very logical explanation, but I could not for the life of me think what it was. Everyone knows your...
29. ### How many folders?

Hi All, Quick disclaimer – I'm no math genius ;) I have written a quick script that take as it's input the number of levels you'd like to iterate and the number of folders at each level you'd like to create. So you have 4 base folders, in each folder you have 4 more folders etc. 4...
30. ### Alcohol + Sound sensitivity

Hi All, I have a pretty off the wall question. I’m looking for a legit biological answer, not just asking for the sake of asking. Admittedly, I like to party it up fairly often – I drink a fair amount of alcohol, but don’t do drugs of ANY kind. I’ve noticed that my senses towards sound...
31. ### Quantum physics vs. Quantum Mechanics

Great thanks - I thought I was going crazzy :)
32. ### Quantum physics vs. Quantum Mechanics

Hi All, I’m sorry if this is a silly question, but can someone please tell me what the difference between Quantum physics and Quantum Mechanics is? Thanks Warrick
33. ### Microsocope ideas

Google "Molecular Memory Part 1" and "Molecular Memory Part 2" on google groups ... interesting perspective.
34. ### Microsocope ideas

Take a look at [PLAIN]http://www.neilos.org/pdf/Research%20Report%20-%20Photos%20of%20energised%20&%20non-energised%20wate.pdf[/URL] It's a PDF with the images in it half way down. RE: Purchasing a microscope to look at water? Why not? I don't know what water at that magnification looks...
35. ### Microsocope ideas

ok thanks Evo -
36. ### Microsocope ideas

Wow, that’s some serious  - Evo, thanks for the link, I was looking for something like that. Although I must admit, my little stroke of curiosity did make me realize how bad my sense of scale is. I took a look at this site http://www.funsci.com/fun3_en/microw/microw.htm, which has some...
37. ### Microsocope ideas

Yes point taken - but like I said, there is a before and after effect -can you explain it?
38. ### Microsocope ideas

RE: What the bleep – I though it was a little mystical but I don’t mind to much for one simple reason. If you look at how the PC ( personal computer ) changed the world we would all agree that it had a positive impact .. this was because things like the spreadsheet were put in the hands of...
39. ### Microsocope ideas

We’ll baloney it may be, but I’ve done quite a bit of research on it and it’s quite an interesting argument. The memory of water and the vortex theory is everywhere and I must admit that the reason for me wanting to purchase this microscope is so that I can examine the results myself. The...
40. ### Microsocope ideas

Hi, I'm interested in purchasing a microscope that can view water at a level similar to what DAVID SCHWEITZER has detailed here. The article says that the microscope does 4000x zoom, but I don't seem to be able to find anything like it on the internet...
41. ### The scale of things

Hi All, I was wondering if someone could help me with a basic understanding of the scale of things in our body. I love this little animation that Brian Greene has out there http://www.pbs.org/wgbh/nova/elegant/scale.html I know very little about biology, so you’ll need to humor me if...
42. ### LaTeX online

Thanks, that's pretty close to what I was looking for but I eneded up building something myslef. I'll build it up a little, but here's how it works. 1. Go to http://latex.liveserver.com/ 2. Enter the LaTeX formula into the text window 3. Click "Continue >>" 4. Copy the generated URL...
43. ### LaTeX online

I'm sorry my question was misleading. I post on a few other groups, and PhysicsForums is by far the most accommodating to this type of post. When I’m not at my computer and need to generate a LaTeX image and post to other boards is where I get stuck. Sorry again for the confusion, and apologize...
44. ### LaTeX online

Hi Guys, Does anyone know if there is an online LaTeX tool anywhere. I'd like be able to feed the online tool a set of LaTeX instructions and have it return and image that I can use in my posts? Thanks Warrick
45. ### E = MC2 - how was it initially proven?

Hi Guys, I got into a silly argument re: e = mc2 this weekend. A friend of mine argued that the furmula was still just a theory - and although I realize almost all great science does start as a theory this particular one was proven a long time ago. The problem was that other than using...
46. ### AC vs. DC Electricity

That makes sense, thanks for you time chroot.
47. ### DC on your doorstep

Another intersting point on home electronics raised was - why does every device you purchase have it's own transformer. Would it not have made sense to implement a series of 12V DC plugs in modern homes? That way minor electronic internals could shape it as they want and we would not all be...
48. ### AC vs. DC Electricity

Thanks chroot, I guess I'll do some more reading before I bug you with the transformer questions. Why is there lower loss when there is smaller currents though?
49. ### AC vs. DC Electricity

Hi All, A friend of mine made a strange claim that I was very curious about. He claims that power lines ( the type that run town to town ) run AC because it travels further distances without loss than DC. Is this true, and if so why is there a difference? Thanks Warrick
50. ### Carbon nanotubes

Wow, thanks I took a look into field emission and it's quite an interesting topic. How does one work with a device this small, from what I've read they are a fraction of the diameter of the cross section of a hair. I can't really imagie myself pickig one of these guys up :) . Surely you...