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Did You Know ?

Discussion in 'Politics & Current Affairs' started by Neophyte, Jan 14, 2018.

  1. Insp Gadget

    Insp Gadget Trusted.Member

    You CAN see without your glasses ...

    [​IMG]
    All you need to do is make a pinhole with your fingers, which will help you focus the light coming into your retina. Sure, it won't give you 20/20 vision, but it's a good start if you've left your glasses at home.
     
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  2. Insp Gadget

    Insp Gadget Trusted.Member

    You can prove Pythagoras' theorem with a liquid ...
    [​IMG]

    Tired of having to write out the proof that a2 + b2 = c2 ? Forget it - rig up one of these, and show it with coloured water.

     
  3. Insp Gadget

    Insp Gadget Trusted.Member

    Cats really DO land on their feet - thanks to physics ...

    [​IMG]

    To accomplish this, cats actually use the two halves of their bodies separately. This technique ensures the rapid rotation necessary for them to right themselves for landing.

    Here is a full slow-motion video ...

     
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  4. Janet

    Janet Trusted.Member

    NO Cat Torture on this blog NO
     
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  5. Insp Gadget

    Insp Gadget Trusted.Member

    Liquids can boil and freeze at the same time ...

    [​IMG]
    It's called the 'triple point', and it occurs when the temperature and pressure is just right for the three phases of a substance (gas, liquid, and solid) to coexist in equilibrium. Such triple points make ideal reference points for the calibration of thermometers.

    Here are some common triple points :

    [​IMG]

    The triple point of water has a unique place in history, because it is the basis of our Celsius units of temperature.

     
  6. jillicious

    jillicious Incestuous Story Writer

    Reminds me of Cat Juggling on The Jerk, an older Steve Martin movie.

     
  7. Insp Gadget

    Insp Gadget Trusted.Member

    Brilliant !
     
  8. Neophyte

    Neophyte Moderator Staff Member

    I don't think any cats were injured in the making of the video.
     
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  9. Insp Gadget

    Insp Gadget Trusted.Member

    You'd be better off surviving a grenade blast on land rather than underwater ...

    [​IMG]
    Those balloons demonstrate what would happen to your lungs if an explosion went off near you underwater.

    The effect of the blast is more severe than on land because of the density of the water and its pressure.


     
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  10. pussycat

    pussycat Moderator Staff Member


    Now you know how a depth charge works


    :rolleyes:
     
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  11. Insp Gadget

    Insp Gadget Trusted.Member


    This is what sunrise and sunset look like on Mars ...

    [​IMG]

    [​IMG]

    [​IMG]


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    These animations were compiled from images captured by NASA's 'Curiosity' Mars Rover.


     
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  12. Insp Gadget

    Insp Gadget Trusted.Member

    A single solar flare can instantly release the energy equivalent to millions of atomic bombs ...

    [​IMG]
    These massive explosions are occurring constantly on the Sun.
     
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  13. Brutus58

    Brutus58 Trusted.Member

    Is this the reason we should be living inside Faraday cages?
     
  14. Insp Gadget

    Insp Gadget Trusted.Member

    So that's what the Warden's name was - perhaps if I'd known him better personally, he might have let me out sooner ! :D
     
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  15. Brutus58

    Brutus58 Trusted.Member

    I never thought of that. When the EMP strikes, the only people with working electronics will be the prisoners (who aren't supposed to have them anyway).
     
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  16. Insp Gadget

    Insp Gadget Trusted.Member

    Saturn's rings are 'paper thin' ...

    Saturn.jpg

    To us here on Earth, Saturn's beautiful rings appear to be massively large. And that is because they are very wide across, and so they reflect a great amount of light. But also, they are extremely thin.

    So, what if Saturn's rings encircled the Earth ? Then from the Earth's equator, with Saturn's rings visible edge-on, they would appear as a thin, bright line bisecting the sky ...

    Rings Equator.jpg

    From Guatemala, only 14 degrees above the equator, the rings would begin to stretch across the horizon. Notice that their reflected light makes the moon look brighter, as well ...

    Rings Guatemala.jpg

    And further north, from Washington, D.C., the rings would still fill only a portion of the sky, but they would appear bigger and brighter nonetheless. Here is what they would look like there at sunrise ...

    Rings Washington.jpg

     
  17. Brutus58

    Brutus58 Trusted.Member

    I knew that they were thin. Just not that thin. Thanks
     
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  18. Insp Gadget

    Insp Gadget Trusted.Member

    This is how a face forms in the womb ...

    [​IMG]

    Embryonic development is an incredibly complex process that scientists are still just beginning to understand.

    But one thing researchers have been able to map out, is how the embryo folds to create the structures of the human face in the womb.
     
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  19. Brutus58

    Brutus58 Trusted.Member

    Then facial deformities could potentially be corrected in-utero. No more cleft lips or palates. Who knows what else could be repaired this way. The next step would be genetic engineering. Sorta like GMO's we are already eating. Gives me the warm fuzzy feelings all over thinking we will all be treated like vegetables.

    tre
     
    Last edited: Jan 23, 2018
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  20. Janet

    Janet Trusted.Member

    Last big EMP to strike Earth was in 1859. If a similar EMP struck Earth today it would wipe out all electronics that were not highly shielded, meaning your cell phone and laptop. As for spacecraft and colonies on the Moon and Mars, they would require a large amount of shielding if humans expect to survive in those environments for decades.
     
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