Recent content by Jim1138

  1. J

    Why doesn't the moon fall down?

    One could argue that the moon does fall down, it just keeps missing.
  2. J

    What are the Holy Grails of Science that could change our world?

    With solar roads, dragging your muffler could be real expensive... and much sparkier.
  3. J

    What are the Holy Grails of Science that could change our world?

    http://en.wikipedia.org/wiki/Theory_of_everything" is the holy grail, I believe. "Sentient computer" or "self-aware computer" AI is not necessarily that intelligent nor self-aware. Interstellar colonization http://en.wikipedia.org/wiki/Space_colonization" "Free energy" would be...
  4. J

    Question about sound waves - lengths and related

    Stokes' law http://en.wikipedia.org/wiki/Stokes%27_law_(sound_attenuation)" Sound traveling through a Newtonian fluid (i.e. water, air, metal, but not Jello) attenuates by the square of the frequency. 1000 Hz attenuates four time as much over a distance than 500 Hz. Which is why elephants...
  5. J

    Humans only use 20-30% of their brain

    Hydrocephalus Classified as hydrocephalus in the article. http://en.wikipedia.org/wiki/Hydrocephalus
  6. J

    Humans only use 20-30% of their brain

    Why so serious about a silly statement followed by a winky?
  7. J

    Humans only use 20-30% of their brain

    I seem to remember (but don't rely on this) that walking and running is mostly performed by ganglia. The story goes that if you chop a chickens head off, it can walk and run just fine (for awhile). I would imagine that collision avoidance is impaired a bit. Collision avoidance appears to...
  8. J

    Humans only use 20-30% of their brain

    The more I think, the more I walk into things. Maybe brains don't help with bipedalism? ;)
  9. J

    Humans only use 20-30% of their brain

    I wonder how many neuroscience/psychiatric/cognitive studies students and professors want him in their studies?
  10. J

    Humans only use 20-30% of their brain

    If one removes 10% of one's brain, you don't just take 10% longer to solve a problem. You would be totally non-responsive and die if that 10% is your brain stem. You might go blind, deaf, mute, be partially or fully paralysed, loose interest in sex, be unable to remember, etc. etc. There may...
  11. J

    Humans only use 20-30% of their brain

    Temporarily dumbed down my intelligence to properly contribute to the thread.
  12. J

    Humans only use 20-30% of their brain

    So the "mush-for-brains" means that he is not using part of his brainz?
  13. J

    Does radiation from phones/PC's increase hair loss?

    Death by Cell Phone texting What evidence? Compared to what? Far more likely you die from texting then by cell phone "radiations". There is http://www.reuters.com/article/2008/10/02/us-usa-train-crash-idUSN0152835520081002" .
  14. J

    Making bacteria express green fluorescent protein - could it decrease fitness?

    It depends on how strongly the protein is expressed. It can reduce the growth rate to zero in extreme cases. If one strain outgrows another by 1%, the first population will be about 2.7X the second in 100 generations (assuming none die).
  15. J

    What would happen if an ICBM was hit by a 1.3 petawatt laser?

    Have you read http://en.wikipedia.org/wiki/Directed-energy_weapon ? The problem with using Lawrence Livermore's petawatt laser http://en.wikipedia.org/wiki/National_Ignition_Facility (NIF) as a weapon is 1) it is huge. It wouldn't even fit on an aircraft carrier. 2) while the peak power is...
Back
Top