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User: fredmosby

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Comments · 434

  1. Re: Silly waystation - space elevator on the moon? on Glenn Urges Direct-to-Mars Trip · · Score: 2, Informative

    Of coarse the length of a space elevator depends on two things. The mass of the planet it's orbiting, and the rotational period of that planet. The moon has 1/5 the gravity of the earth, but it has a rotational period 30 times as long. So an elevator on the moon may not be that feasible.

  2. It seems to work for my version of Safari. on Future Directions Proposed For Mozilla · · Score: 2, Informative

    What's your system configuration?

  3. Re:I think they're crystals on Mounting Evidence for Water on Mars · · Score: 1

    Most of the smaller body you suggest is another spherule has a shadow cast over it...

    I don't see the shadow you're talking about, maybe you're looking at the wrong one.

    ...it is possible it's nothing more than a portion of the substrate that stubbornly refuses to detach from the spherule.

    Here is a sharper image of the the same object, it clearly shows that the spherile is one object

    I don't see why this shape should be outside the parameters of the process I'm describing.

    This shape as well as the the spherical shapes of the other spheriles are more likely to be hematite crystals caused by some metamorphic process. The process you describe wouldn't form the smooth shapes seen in the images.

  4. Re:data and speculation on Mounting Evidence for Water on Mars · · Score: 1

    In fact, you can see that rocks sometimes look "shiny" in one wavelenth, but dull and normal in another.

    Actually if you look at those volcanic rocks in the visible spectrum you will see that the ones that don't have dust on them actually are a little shiny. The names of the pancam images that are in the visible spectrum end in:
    ...L4M1.jpg (red)
    ...L5M1.jpg (green)
    ...L6M1.jpg (blue)

  5. I think they're crystals on Mounting Evidence for Water on Mars · · Score: 2, Interesting

    If you look at the spheroid in the upper left of this image you see a spheroid that actually looks like two partial spheres stuck together. It looks to me like it's caused by an imperfection in the crystal structure. Anyway the shape couldn't be caused by the spheroid rolling around on the surface.

  6. Re:my post on Nearly Half of U.S. 'Net Users Post Content · · Score: 4, Funny

    By posting this, I am adding content to the web and contributing to the figure in this study.

    Not unless this is your first post.

  7. too manny acronyms on Security Update 2004-02-23 Released · · Score: 1

    what does IOW mean?

  8. Re:Problem with security update don't install. on Security Update 2004-02-23 Released · · Score: 3, Funny

    After using Mac OS X for four years I couldn't help but laugh at this troll. Only a windows user would think the problems listed are even remotely plausible.

  9. I'm not sure you could launch an F-18 of that. on Navy Jet eBayed - Some Assembly Required? · · Score: 2, Interesting

    Those foreign carriers can usually only launch harriers.
    French Carrier: 20,000 tons displacement
    American Carrier: 100,000 tons displacement

  10. Why does it matter? on Europa's Acid Ice Fields · · Score: 1

    It's not like anyone else is using those resources.

  11. Re:How environmentally friendly is solar power? on Ethanol to Hydrogen Reactor Developed · · Score: 1

    yeah, but you'd still have to replace them when they wore out or broke. So you would get a large initial cost followed by smaller continuous replacement costs.

  12. How environmentally friendly is solar power? on Ethanol to Hydrogen Reactor Developed · · Score: 1

    I always hear environmentalists say that solar power is the best replacement for oil power. What I want to know is what chemicals are used to manufacture solar panels. The way I understand it solar cells are a lot like computer chips to manufacture. It would take thousands of square miles of solar panels to power the U.S. How much toxic waste would be produced?

  13. Re:What do they mean by pumpkin shaped? on Earth Growing Due to Melting Glaciers · · Score: 1

    I know you're probably joking. But what they mean is that the Earth is an ellipsoid, which is sort of like a sphere that has been squished at the top and bottom.

  14. They should add a moderation option. on IC Failures Linked to Resin Series? · · Score: 1

    +1 conspiracy theory

    All right. You blame the large corporations. I'll blame the environmentalists. It's a good thing there are always so many people to blame when things go wrong.

  15. Re:Pretty hilarious... on BBC Links Linux To MyDoom · · Score: 1

    Are you implying that it's ok for Slashdot to make up conspiracy theories?

  16. Re:DU is Harmless on Trojan Horse Caused A Siberian Explosion · · Score: 1

    Could you post your sources for that information?

    I have never seen a real study indicating that cancer rates have actually increased, and that the increase was caused by DU. Given the fact that DU really is about as dangerous as lead, I would be surprised if your statistics were true.

  17. why? on Second Hypersonic X43 Scramjet Ready for Testing · · Score: 1

    But why would they keep the top speed secret after they have been decommissioned?

  18. Re:hypersonic is above mach5 on Second Hypersonic X43 Scramjet Ready for Testing · · Score: 2, Insightful

    The XB-70 Valkyrie flew at mach 3.1. But it's thermal protection consisted of stainless steel and thin white paint. The only figures I can find on the internet say the SR-71 toped out at mach 3.2. It seems odd that the SR-71 required so much more thermal protection when it's top speed was less than 100 mph faster.

  19. Re:Australia did it first on Second Hypersonic X43 Scramjet Ready for Testing · · Score: 1

    You don't get to Mach 7.6 using just the force of gravity!!!

    Yes you can, the space shuttle goes(went?) around mach 20 on re-entry. The apollo moon shots went around mach 35 on re-entry.

  20. Why would the exhaust be radioactive? on Second Hypersonic X43 Scramjet Ready for Testing · · Score: 1

    If the reactor were properly designed it's exhaust would be the same air that was put in the engine. It wouldn't be radioactive unless pieces of the uranium were breaking off and it wasn't shielded by anything.

  21. Less than half on Second Hypersonic X43 Scramjet Ready for Testing · · Score: 5, Insightful

    The liquid fueled rockets that nasa uses today use liquid hydrogen and liquid oxygen in the reaction:

    2 H2 + O2 -> 2 H2O

    Which means that by mass modern rockets use about 8 times as much oxygen as they use hydrogen.

  22. Re:What about radio control? on Robots for No Man's Land · · Score: 1

    But if they're radio controlled the enemy forces might be able to take control of them.

  23. Re:Steal SOME on Mars Rover Spirit Back Online · · Score: 1

    hell maybe its got nicer rims too

    I don't know, the spirit rover has pretty fancy rims.

  24. It comes full circle on Apple and Pepsi Ad Sports RIAA Targets · · Score: 1

    The music companies should advertise free pepsi at their concerts. Their advertising money would go to pepsi. Pepsi would give that money right back to the music company.

  25. Re:So What ? on Intel to Increase Stages in Prescott · · Score: 2, Insightful

    I agree with the argument you are trying to make. But it would probably work better if you were less condescending.