Recent content by JustAnyone
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J
Graduate Binding force applicable only to photons?
Thank you both for your informative replies. I've not had any quantum mechanics classes. My wife and I have been quite impressed that the pervasive growth of internet communications tech has led to the ability to ask serious questions of learned people with minimal overhead costs. The fact...- JustAnyone
- Post #4
- Forum: High Energy, Nuclear, Particle Physics
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J
Graduate Binding force applicable only to photons?
Two Questions about fundamental forces: 1. Gravity is attractive, Electromagnetics is attractive and repulsive, Strong nuclear is attractive only (?) ... Is the weak nuclear force repulsive only ? Wikipedia is _vague_ on this. Also, I'm remembering that gravity increase with the square of...- JustAnyone
- Thread
- Force Photons
- Replies: 3
- Forum: High Energy, Nuclear, Particle Physics
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J
How Does Weather Behave Inside a Rotating Cylindrical Spaceship?
A good model might be (extemporaneous thoughts here...) a high-tilt planet. These have high heat loads at one end, cold opposite poles, and high winds between equalizing things. I would recommend something - an actual experiment. * Obtain a lathe. * Obtain two small sheets of...- JustAnyone
- Post #6
- Forum: Sci-Fi Writing and World Building
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J
How Does Weather Behave Inside a Rotating Cylindrical Spaceship?
Also, spinning at 1 g puts a lot of stress on the framework. i'd suggest generating 1/2 G of force. It's enough to stave off bone loss and serious medical problems. it will also greatly reduce the mass requirement of building it to handle high centripetal forces.- JustAnyone
- Post #4
- Forum: Sci-Fi Writing and World Building
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J
How Does Weather Behave Inside a Rotating Cylindrical Spaceship?
You're describing something different from Clarke's Rama, which I've not read in a long time, but does give ideas. * Coriolis Effects (http://en.wikipedia.org/wiki/Coriolis_effect): If you're standing on the inside of a rotating cylinder, and throwing a ball to a person either fore or aft...- JustAnyone
- Post #3
- Forum: Sci-Fi Writing and World Building
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J
Graduate Predicting Half-lives of Radioactive decays
Question: Stimulate Beta Decay As an engineering problem, I'm trying to figure out if it is possible to stimulate beta decay in a nucleus (of, say, a Lithium 7, a relatively stable and abundant isotope). The natural decay path would be to Beryllium, but giving off an electron, we could...- JustAnyone
- Post #11
- Forum: High Energy, Nuclear, Particle Physics
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J
Undergrad What kind of force would be needed to push the Moon into the Earth?
F=MA M=mass of moon. A=change in velocity per second. Thus, to push the moon into the earth, 1 Newton of force applied over nearly infinite time would yield nearly infinite acceleration. The right question is how much energy would be required. Express this in Newton-meters per...- JustAnyone
- Post #4
- Forum: Mechanics