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Leader Bee

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Posts posted by Leader Bee

  1. I imagine using a nuclear device at determined depth under the surface and possibly near fissures and geographical fractures on a sufficiently small 'roid would be effective, however , considering the estimated mass of this particular asteroid is 21,000,000,000 kilograms and the composition is partly iron ore it wouldnt leave sufficently small chunks for us to be left "in the clear".

     

    You mention using the radiation produced instead of the thermal and kinetic energy to move the object off course. How does this process work? of course radioactive particles have some mass and therefore have a small possibility of thrust but the uncontrollable nature of an explosion means the majority of energy from the explosion ( including the radioactive materials are thrown away from the object, perhaps the use of a radiological weapon ( neutron bomb ) would be more appropriate, even still the majority of these particles would still be thrown anywhere other than the intended target.

     

    Perhaps if scientists could come up with a robust enough shaped charge to direct this energy?

     

    You see nukes used to destroy asteroids in most movies involving a collision with earth but now i've thought more about it it's highly innefficient cost wise, energy trasmitted to the roid wise and the danger of huge chunks of iron and lead you are risking it breaking apart into.

     

    If we were to detect the object in enough time landing an ion engine on the rock to slowly move it out of earths orbit would work? This technology as far as I am aware is in it's infancy though and not sure how reliable it truly is.

  2. I was thinking about the asteroid "Apophis" recently thats scheduled to be a NEO in 2036 and was wondering if it was actually going to hit us how could we prevent it?

     

    I've heard a lot of mention that we might use nuclear devices to divert the course of a rock bound for earth, then it hit me. Space is a vacuum. How on earth would a nuclear explosion transmit it's energy into the asteroid efficiently enough to divert it? My only guess is we would have to land the device directly on the service.

     

    I know there are other methods of diversion but I guess the real question is are what are the effects of nuclear weapons in the vacuum of space? An EM Pulse is going to be the most obvious.

     

    What is the brissance of an explosion in space compared to at sea level on earth? is the explosion radius bigger or smaller? is there still a shockwave of some type? ( i find it difficult to comprehend without the prescence of a transmitting material )

  3. 3) how can the tip and centrepoint have a variable speed if they are powered by the same energy source?

     

    The energy source isn't putting out 2 varying amounts of energy.

     

    The only reason I could think that that there may be a difference in speed at each point is due to energy loss.

  4. Greetings SFN users.

     

    New to the forums so a big hello, hopefully my first question will be a productive one.

     

    I was sitting at work recently watching the clock tick by when it occurred to me...

     

    The point of the hands closer to the centre must be moving slower than the extremeties of the hands?

     

    What brought me to this conclusion is that the circumfrance of a circle closer to the centre has a shorter distance than a circumfrance of a circle further out from the centrepoint.

     

    Consider if I was to walk around the same running track, once on the inside circumferance and the second time around the outside circumferance. The second time would take me longer (considering I walked at a constant speed on both laps ) so to compensate on the second lap I would run instead of walk to complete my lap in the same time I would have completed the first.

     

    My questions are therefore:

     

    1) what processes are in effect so that the tip of the minutehand stays in alignment with the centre.

     

    2) if one part is moving at a quicker rate than the part closer the centre shouldn't there be a noticable drag or trailing tip, what is preventing this bending or lag time?

     

    3) how can the speeds of the tip and the centrepoint be variable if they are running from the same and sole (non variable) powersource? I.e: the clock motor.

     

    I imagine this same question could be applied to planetary bodies also but differeng compositions of internal structures would alter the answer ( solid core, liquid or gas, etc.)

     

    Regards

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