How are we able to estimate the Planck's constant at a much higher accuracy (44 per billion) than the gravitational constant G (120,000 per billion)? What is affecting the measurement of G? |
- How are we able to estimate the Planck's constant at a much higher accuracy (44 per billion) than the gravitational constant G (120,000 per billion)? What is affecting the measurement of G?
- When you dip a napkin in water and the napkin eventually soaks up, where is the energy coming from to move the water up the napkin?
- Why is the specific heat capacity of an object dependant on its temperature?
- Where would I weigh less? The top of Mount Everest, which is further from the Earth but has less centripetal force acting on you to make you lighter, or the top of Mount Kilimanjaro, which is very close to the equator, but also closer to Earth?
- Why is the periodic table such a great historical accomplishment? I understand that Mendeleev was ahead of his time but I never understood what it is he actually did, or how he did it to be able to get his results.
- Which evolved first, herbivores or carnivores?
- Are LEO satellites visible with the naked eye?
- Does the depletion of oxygen in the sea vary with level of pollution in the respective area?
- Are all the planets in our Solar System rotating around the sun on the same level (plane)?
- How do black holes get larger?
- In what ways does microgravity induced osteoporosis differ from osteoporosis gained in normal gravity?
- Why is a group of clouds often on an equal altitude instead of varying in altitude?
- If salt is dehydrating, how is it used in sports drinks to keep you hydrated?
- Are there any animals that are known to celebrate events?
- Why are so many earthquakes in Skagway Alaska showing up as 0.0km depth?
- Can frequent use of Benzodiazepines such as Xanax cause permanent brain damage?
- Is there any wildlife unique only to North Korea?
- Why does the sun look red as it nears the horizon?
- Why does the color black attract more heat than other colors?
- How do AC to DC adapters work?
- Is it possible to estimate the population density of an organism by analyzing the environmental DNA present in the surrounding medium?
| Posted: 03 May 2017 03:58 AM PDT I'm asking because I was reading about the Planck's units and how almost all of the uncertainty in them comes from the value of G. [link] [comments]  |
| Posted: 03 May 2017 03:19 AM PDT The water moves up the napkin and eventually soaks it upwards, what is making the water and moisture move upwards? Where does the energy lifting the water up come from given energy cannot be created or destroyed? Might be a dumb question, but it's bugging me. [link] [comments]  |
| Why is the specific heat capacity of an object dependant on its temperature? Posted: 03 May 2017 03:19 AM PDT |
| Posted: 02 May 2017 06:09 PM PDT I realise that the effect of centripetal force is incredibly minor, but is it a smaller effect than the change in gravity between those two places? [link] [comments]  |
| Posted: 03 May 2017 04:56 AM PDT |
| Which evolved first, herbivores or carnivores? Posted: 02 May 2017 06:38 PM PDT I looked through various google results but I couldn't figure it out. [link] [comments]  |
| Are LEO satellites visible with the naked eye? Posted: 03 May 2017 03:37 AM PDT |
| Does the depletion of oxygen in the sea vary with level of pollution in the respective area? Posted: 03 May 2017 12:47 AM PDT |
| Are all the planets in our Solar System rotating around the sun on the same level (plane)? Posted: 02 May 2017 04:48 PM PDT All pictures show the planets on the same level or plane. Is that true or is it simplified for the general public? Or do the planets circle the sun with each planets orbit following it's own path? If they do orbit the sun on the same level is that because the sun causes them to rotate along a certain axis? Sorry if it's been explained before but I couldn't find the answer to my actual question(s). Thanks in advance [link] [comments]  |
| How do black holes get larger? Posted: 02 May 2017 09:01 AM PDT When an object moves towards the event horizon of a black hole, it experiences increasing time dilation from our perspective. If it takes an infinite amount of time for matter to "cross" the event horizon then how can a black hole grow in size in any meaningful time period? Wouldn't all the new matter just run into the old matter outside the event horizon as it hits slower and slower time "areas"? [link] [comments]  |
| Posted: 02 May 2017 03:22 PM PDT As well as this, how is osteoporosis induced from microgravity treated differently to other types of osteoporosis? [link] [comments]  |
| Why is a group of clouds often on an equal altitude instead of varying in altitude? Posted: 02 May 2017 12:14 PM PDT |
| If salt is dehydrating, how is it used in sports drinks to keep you hydrated? Posted: 02 May 2017 12:35 PM PDT I understand salt helps retain water, but then why do they say that eating salt is bad for dehydration? [link] [comments]  |
| Are there any animals that are known to celebrate events? Posted: 02 May 2017 12:32 PM PDT Humans celebrate all sorts of things, from events like birthdays to achievements like getting a raise or winning a game. We typically perform some sort of celebration that involves other humans. Are there any animals which do similar things and if so, which ones and why? [link] [comments]  |
| Why are so many earthquakes in Skagway Alaska showing up as 0.0km depth? Posted: 02 May 2017 03:38 PM PDT |
| Can frequent use of Benzodiazepines such as Xanax cause permanent brain damage? Posted: 02 May 2017 03:23 PM PDT I recently came across this study, which indicates that frequent use of Benzodiazepines can result in "permanent [cognitive] deficits or deficits that take longer than 6 months to completely recover." Another study, however, found that patients who have ceased Benzodiazepine intake have eventually restored cognitive function after several years. I'd like to know if there have been more conclusive studies done on this subject or if there are any experts here that could shed light on whether a frequent user of Benzodiazepines can eventually restore their former cognitive function. Side note: I am asking this as a former user of Xanax. Although I personally have not noticed any cognitive impairments as a result of the taking the drug, I've come across many patients who have complained about impaired memory. [link] [comments]  |
| Is there any wildlife unique only to North Korea? Posted: 02 May 2017 10:44 AM PDT Given that North Korea is the most isolated country in the world, and has a large area it stretches on, are there any forms of life unique to North Korea? If so, is there any collaboration between North Korean biologists and biologists from other countries? [link] [comments]  |
| Why does the sun look red as it nears the horizon? Posted: 02 May 2017 02:34 PM PDT |
| Why does the color black attract more heat than other colors? Posted: 02 May 2017 09:34 AM PDT |
| How do AC to DC adapters work? Posted: 02 May 2017 10:15 PM PDT I've been studying AC transformers in my class, and it got me thinking about adapters used for phones, laptops, etc. I know the principle of transformers don't work with DC and the adapters have something to do with diodes. Thanks for the help! [link] [comments]  |
| Posted: 02 May 2017 11:21 AM PDT Hello everyone, I'm a biologist with a specialization in aquaculture. After a conversation with an entrepreneur in the field, I've been researching eDNA as a possible detector for unwanted organisms close to fish farming sites. From what I've read (skimmed through a couple of articles) it should be possible to detect the presence of a specific organism in the water column, but what I'm trying to figure out is if its possible to measure the actual level of this unwanted organism in the water column. Though I'd ask here before I waste my time doing research in the blind. [link] [comments]  |
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