baxtonduglonn

If you mean a permanent magnet then the field corresponds to a direct current, i.e. a static field, not a varying one as in the case of alternating current. Merged post follows: Consecutive posts mergedI have been thinking (I think) since my last post. In the Faraday Motor, a wire carrying a direct current rotates around a permanent magnet. A coiled wire carrying a current resembles a permanent magnet. What form of magnet resembles a straight current carrying wire ? Can perpendicular magnetic fields induce any motion. I'm not suggesting perpetual motion or free energy, just trying to get my head around an "unwound" magnet !

If I am a 100kg person and the door is 10kg, then the door experiences 10 times the acceleration that I do (F=ma). I also have friction between my shoes and the floor while the door is on hinges, which are (hopefully) free to move. So the door moves and I do not but we both experience the force (not "the Force", Luke) of 10 N.

A wave is a disturbance that propagates through space and time, usually with transference of energy. A mechanical wave is a wave that propagates or travels through a medium due to the restoring forces it produces upon deformation. There also exist waves capable of traveling through a vacuum, including electromagnetic radiation and probably[1] gravitational radiation. Waves travel and transfer energy from one point to another, often with no permanent displacement of the particles of the medium (that is, with little or no associated mass transport); they consist instead of oscillations or vibrations around almost fixed locations. http://en.wikipedia.org/wiki/Wave

Try this one: http://www.rentron.com/remote_control/remote1.htm

And you end up with copper/paper/zinc/copper/paper/zinc........ or the reverse. It only affects the polarity of the battery. Make sure the pieces of paper are only touching the metals immediately next to them, i.e. not touching other papers or overlapping the metal.

Just heat a small sample in a bunsen burner flame. No need to dissolve and add ethanol.

Infra-red can be reflected from other objects, e.g. pointing the TV remote control at the ceiling will still control the TV. For reliable control I would use radio.

I just googled Kender and found a list of sites with "news" stories suspiciously similar to those of Patriot Energy Corp, who claimed to be replacing catalytic converters with "H2O Oxygenators" and appear to have been a scam. Based on this and the ridiculous claims made for this generator, I am convinced that this is also a scam. The "Make Money With Us" button on the homepage does nothing to persuade me otherwise.

When it comes to DNA, the "practical things" are usually done in bed, not in the lab. Seriously, with a four member sequential code, it should be easy to program; the difficult part is assessing how each pair relates to other pairs in combination. I know considerable progress has been made in this field, e.g. the gene responsible for achondroplasia, the form of dwarfism my wife has, was identified in 1994. When it becomes possible for two individuals to enter their DNA sequences into a computer and get a prediction of the likely characteristics and defects of potential offspring, then we enter the realm of "designer babies" and the ethical dilemmas that will pose.

In the 1980s, I had a programming task at assembler level. The entire program for the machine had to fit in 2K of ROM, so the tightest possible code was required. During certain parts of the programming I had to think in binary and mentally perform cpu tasks (thankfully, it was only an 8-bit processor (8080)). I experienced several nights where I fell asleep thinking in binary and suddenly woke up at 3 or 4 in the morning needing to write down the code that I had developed while dreaming. The first time this happened, I had been working on a way to detect leap years from the internal clock when the dream revealed that as the year 2000 was a leap year I did not need to code for century detection. All I needed was to examine the two least significant bits of the year bytes; if they were zero it was a leap year. This convinced me that sleep and dreams are not to rest the brain but to rest the body and run the brain in "batch mode" with minimum external interference.

And now I understand those people who post a question and then argue strongly if the answer does not agree with what they wanted to hear. They do not have true intelligence, only artificial. BTW I am referring to the free energy fanatics, probably found more often on the Mythbusters Forum site.

The photoelectric effect ? Electrons are emitted after the absorption of photons.

Radio transmitters use resonant circuits to ensure the output is on the correct frequency. The power output to the antenna is always much less than is supplied to the final amplifier. If it was more, you could just use some of the extra power to drive the transmitter and power your house at the same time. Just because there is a video on YouTube, or elsewhere, does not prove any scientific concept, it just shows that some people can make videos and some people are gullible enough to believe anything if it sounds good to them.

The distance d refers to the distance between the centres of gravity of the two objects, not from the centre of the spherical one to the edge of the other.

If the intention is to be a short demonstration of spark generation, I can certainly help, but all electrical sparks generate radio interference across a very wide bandwidth. If you just want to show the effect, fine; if you want to deliberately jam radio transmissions, then 'no way, Jose!'

When I went to school, in the 1960's ,refraction of light through a prism, glass block or even water ("the bent pencil"), was always explained as being due to a change is the speed of light as it entered a more or less dense medium. There also seems to be some confusion between the Universal Gravitational Constant 'G' and the acceleration due to Earth's gravity 'g'. The gravitational force between two objects is given by: m1 m2 F=G------- 2 d where F is the force, m1 and m2 are the masses of the two bodies, and d is the distance between them. Using the mass and radius of Earth: G m(earth) g=-------------- = 9.81 m/s approx 2 radius(earth)