Recent content by captn

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    Graduate What Are the Effects of Gamma Radiation on Carbon 60?

    Your title says "Carbon 60". Maybe this is making those with knowledge of Cobalt NOT look at the question of Carbon. I thought you might be talking about buckyballs. Neil
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    Undergrad Maintaining Orbit of Two Planets Around Sun: Is it Possible?

    Yes Isn't your 'two planet' system equivalent to the Earth-Moon system? Neil
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    Graduate Was the Moon Only 16,000 km from Earth During the Hadean Eon?

    True, but it does have to do with where force is applied. Consider Earth: if the moon were at the geosynchronous distance, the pull of the moon would always be on the same 'spot' on earth. Beyond (wrt earth) the geosync distance, the Earth would spin faster than the moon orbits and thus the...
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    Graduate Using Ni-Chrome Wire for Heated Cathode in Electron Gun

    Just breaking a neck could be bad--- a 'slug' of air can be injected towards the screen---large and fast enough could shatter the tube--and stir up the phosphor into the air that you will be breathing. It's probably better to break off the tip that was used to seal in the vacuum. At least, that...
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    Graduate How Does a Black Hole's Gravity Vary Despite Its Infinite Density?

    We don't know if there is a singularity inside the event horizon---continuing the math inside the event horizon suggests a singularity, but perhaps not all possible factors have been taken into account. (Quantum effects, as suggested above, for instance.) Neil
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    Graduate Is Lithium-6 Deuteride a Legal and Efficient Hydrogen Storage Option?

    Gordon Since you specify 6Li2D, rather than lihium-six and deuterium, I assume you are interested in a fusion bomb. I don't know about today, but I recall that several decades ago the US Govmnt took all the Li-six from newly mined lithium. Lithium deuteride doesn't degrade, to my...
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    Undergrad Need help making a cloud chamber

    Search for Peltier and cloud chamber---there are some 'instructables' about diy cloud chambers and at least one of them uses Peltier junctions instead of dry ice. Neil
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    Graduate Problems with electromagnet force and weak force

    The mass/energy of the interacting particles isn't enough to create the 80 or 90 GeV boson, so the virtual boson borrows energy from the vacuum. The uncertainty principle allows for energy to be 'borrowed' if it is paid-back within a (very) short time. Neil
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    Graduate Would it Feel as if Time Stopped If I Became Light?

    This discussion(?) reminds me as to why universities are "storehouses of knowledge"--- the freshmen bring so much with them and the seniors leave with so little! the_captn
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    Undergrad Can We Harvest Energy from Radiowaves?

    Fifty years ago, it was fun to build a crystal radio, then build another wideband radio (which would not separate the stations from each other), and use that energy to power an audio amplifier to make it easier to hear the crystal radio. So, yes, it is possible, but the energy was not worth the...
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    Graduate Omega Point Theory: Plausible or Pseudoscience?

    I read his book on "the Physics of Immortality" several years after it was published, in fact after the accelerating expansion was discovered; as I read the first twenty or thirty pages, I noticed a few things that I thought were wrong. It then occurred to me (my opinion, here) "He is writing...
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    Undergrad How Close Do You Need to Be to High Voltage Power Lines to Induce Current?

    I was thinking of a single line, intercepting (receiving) EMP power from an airburst nuclear explosion. The analysis that I have seen, treated a single, long, power line and the fall-off of intensity as inverse-distance. Do you know of a discussion of this (preferably on-line)? --my E-M...
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    Undergrad What are some ways to improve wireless energy transfer using coil antennas?

    If it heated-up from the 5 volt USB port, it will melt if plugged into a wall socket. For a design starter, see: http://www.instructables.com/id/Wireless-Power-Transmission-Over-Short-Distances-U/?&sort=NEWEST&limit=50&offset=150 Neil
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    Undergrad How Close Do You Need to Be to High Voltage Power Lines to Induce Current?

    http://www.pureenergysystems.com/news/exclusive/2004/pylon_ambience/index.html has an art project which lights-up four-foot fluorescent tubes under a high-power line. I have a better reference, but can't find it right now. Neil
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    Undergrad How Close Do You Need to Be to High Voltage Power Lines to Induce Current?

    The inverse-square-law applies to point sources; in this case you have a line source and the fall-off becomes inverse-distance. Neil