Recent content by mycotheology

  1. M

    What do the different symbols in 23andme raw data files mean?

    For anyone that doesn't know, 23andme is a company that sequences your genome for you (you send them a saliva sample). It gives you a raw data file ful of SNPs. Heres an example of some SNPs from a raw data file: rs3128126 1 962210 GG rs2710875 1 977780 TT rs2465136 1...
  2. M

    Is it possible to change the chirality of an atom like this?

    Yeah I meant chirality of the carbon. No, its not for an amino acid and synthesising it isn't an option in this case, I need to find a way to modify it.
  3. M

    Is it possible to change the chirality of an atom like this?

    Heres the chiral center: I want to change the chirality of the amino group. I was wondering if I can do it through some kind of nucleuphilic addition to the carbonyl group, while adding something to adding a metal that will coordinate the amino group and drag it back or force it to change...
  4. M

    Time slowing down for someone traveling just under the speed of light

    Ah, so its called the twin paradox. Thanks a lot. Hopefully those FAQs will resolve it for me. The wiki page looks good too.
  5. M

    Shining a laser out of a train - What does the stationary

    Ah right, so the stationary observer sees the light travel ahead of the train at 0.01c, that's what I needed to know, thanks a lot.
  6. M

    Time slowing down for someone traveling just under the speed of light

    I read that if a spaceship is traveling at a really high speed, let's say just under lightspeed, that the crew will age more slowly than us earthlings because time slows down when they are traveling at such a high speed. What doesn't make sense to me is that relative to the spaceships crew, its...
  7. M

    Time slowing down for someone traveling just under the speed of light

    Lets say ship 1 is traveling just under the speed of light so time slows down for the crew and the age less quickly than the stationary crew in ship 2. Relative to the crew in ship 1, the crew of ship 2 are traveling at just under the speed of light, so time moves slower for them and they should...
  8. M

    Shining a laser out of a train - What does the stationary

    Lets say its the future your camera has an insanely fast shutter speed. You're standing on the ground watching a train travel past at just under the speed of light and the train driver is shining a laser pointer out the front window. With your insanely fast reflexes you take a take a picture of...
  9. M

    Exploring the Earth's Orbit: What are Milankovitch Cycles?

    Thanks. Does that 5 million km difference make much difference to the temperature of the earth? I reckon it would. Venus, from what I hear, is scorching hot compared to the earth. Not sure how far venus is from earth, my guess (based on the radius you told me) would be 40 million km.
  10. M

    Exploring the Earth's Orbit: What are Milankovitch Cycles?

    I figured out the answer to the question in the title. The seasons are due to the Earth's north to south axis facing towards or away from the sun at different times in the year. I have a couple of other questions: 1.) What does a week signify? A day is how long it takes for the Earth to make a...
  11. M

    Why does vertically falling rain make a slanted steaks on a window?

    Ah right, then in that case I think intermolecular forces would be the main factor behind non vertical streaking. The water droplets don't instantaneously merge with the glass, they can only attach to the glass with adhesive forces determined by the intermolecular forces between H2O and SiO2...
  12. M

    Why does vertically falling rain make a slanted steaks on a window?

    Its all a matter of air resistance isn't it. The water droplets cannot oppose the air resistance as well as the car can. If you stick a piece of string out the window, the string won't hang vertically, it will hang slightly horizontally even though its horizontal velocity with respect to the car...
  13. M

    How does the entropy behind osmosis work?

    Using a simple example: air, why does it naturally form a uniform mixture? Brownian motion wouldn't differentiate between different gases that make up the air.
  14. M

    What is the physics behind quantum tunneling

    I think its Heisenbergs uncertainty principle. The smaller a particle is, the less its position in space can be known. As a result, it exists in multiple locations in space.
  15. M

    What is phase velocity and how does it relate to group velocity?

    Ah right, that clears it up, thanks a lot.
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