If the refractive index of something is high enough could light just stop moving? |
- If the refractive index of something is high enough could light just stop moving?
- How can potassium diffuse through a membran that sodium can't?
- How big could a lunar colony get before it started noticeably changing the gravitational orbits of the Earth and Moon?
- If energy cannot be destroyed where does it go?
- Is it possible to superimpose a wave of light on top of another wave of light to make completely destructive interference?
- If space is under perpetual expansion, then is time also 'expanding'?
- Why all of the world's highest mountains are in South Asia?
- Prince Rupert’s Drops: Is it only liquid glass that acquires amazing qualities when dripped into water? Could a liquid metal become stronger?
- An Ad is promoting a "Copper Dry Brush". The Ad says our "modern environment is filled with unnatural, positively charged electrical ions that contribute to feelings of lethargy and dullness?" Is this factual, or is it akin to claims about the power of pyramids and crystals?
- Can a smaller planet have a larger moon orbiting around it?
- Why dont people use microscopes to view the moon and the sky, instead of the conventional telescope?
- How are modern day amputations done?
- How does the addition of an extra 23rd chromosome cause all people with down syndrome to look the same?
| If the refractive index of something is high enough could light just stop moving? Posted: 23 Feb 2019 02:26 AM PST |
| How can potassium diffuse through a membran that sodium can't? Posted: 23 Feb 2019 06:00 AM PST In biology we are talking about action potentials. One part of that is sodium-channel-proteins opening so it can pass into the Axon. But we were taught that potassium can pass through the cell-membran without issue. Sodium and potassium are both positively charged and sodium should actually be a bit smaller due to having less electrons that push each other away, meaning that if potassium can pass through something, sodium should also be able to. So my question is as stated above: how can potassium diffuse through something if sodium can't. P.S. I learned all this in german and googled for the translations, so please excuse any wrong vocabulary and feel free to correct me on any mistakes I may have made. [link] [comments]  |
| Posted: 23 Feb 2019 07:32 AM PST You can assume that the mass is actually shifting from one to the other, at least until we start mining asteroids. [link] [comments]  |
| If energy cannot be destroyed where does it go? Posted: 22 Feb 2019 04:52 PM PST If energy cannot be destroyed, for example if I am to turns light switch on electrical energy heats get transferred into heat energy but where does it go from there and where does it go after that? I just don't get how it can not be destroyed or be used because it definitely seems like I'm using it in my phone right now as well but I just don't know what about science Sorry I am very young and don't know much about science. Thank you [link] [comments]  |
| Posted: 22 Feb 2019 06:02 PM PST |
| If space is under perpetual expansion, then is time also 'expanding'? Posted: 22 Feb 2019 08:20 PM PST OK, here is what scientists use to explain part of Einstein's theories: 'Space and time cannot be separated. You should always see it as an intertwined fabric called spacetime.' Here is what they use to explain the expansion of the universe: 'The stars and galaxies stand pretty still, it's the space between them that is expanding.' So... does that mean time is also in expansion? That is, the 'distance' between T and T+1 is getting longer & longer? If not, how to reconcile the above 2 quotes? [link] [comments]  |
| Why all of the world's highest mountains are in South Asia? Posted: 22 Feb 2019 07:52 PM PST |
| Posted: 22 Feb 2019 08:52 PM PST |
| Posted: 22 Feb 2019 11:59 AM PST Not sure if this counts as Physics, Medicine, or Human Body, or something else. Here's the relevant text of the Ad: Our Newest Product has arrived, The Copper Dry Brush! Elevate your beauty and wellness ritual with this next level dry brush WHY COPPER? Modern life can fill our environment with unnatural, positively charged electrical ions that contribute to feelings of lethargy and dullness. Our Copper Dry Brush generates an abundance of easily absorbed and neutralizing negative ions that counter the effects of modern technology and leave you feeling peaceful and refreshed. [link] [comments]  |
| Can a smaller planet have a larger moon orbiting around it? Posted: 22 Feb 2019 03:30 PM PST |
| Why dont people use microscopes to view the moon and the sky, instead of the conventional telescope? Posted: 22 Feb 2019 11:53 PM PST ... since microscopes have higher magnification than telescopes [link] [comments]  |
| How are modern day amputations done? Posted: 21 Feb 2019 11:02 PM PST |
| Posted: 21 Feb 2019 11:05 PM PST Another way of asking it is this, how does the extra 23rd chromosome phenotypically change individuals from unique phenotypes (if they had 46 instead of 47) to phenotypes where they are "identical"? (No one has ever had to guess, "does he have Down syndrome over there?" We all know when someone has Down syndrome) [link] [comments]  |
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