Is it possible to navigate in space?? |
- Is it possible to navigate in space??
- The heisenberg uncertainty principle and quantum physics are interesting-- but how is it confirmed?
- What are real-life applications to fractional and higher-order (specifically of degree 3+) derivatives?
- How were they able to continue to operate Reactors 1-3 after the Chernobyl disaster?
- Why is the speed of light expressed as 'c'?
- If A Railgun Fired in Space, Would There Be Recoil?
- Does giving blood change your vascular system?
- How quickly does our body identify nutritious intake of substances?
- How large would an asteroid need to be to be visible by the unaided eye in the night sky and has this happened?
- Eureka moments; what are they, really?
- Is the entire atmosphere of ice and gas giants opaque?
- Other than water and salt, are there any products that we eat which have absolutely no biological origin/ingredients?
- What would happen if the ballast tanks on a ship were a vacuum?
- How does rain affect airplane drag and lift?
- How do laser pointers damage the human eye?
- Why do the pictures on thermochromic mugs fade in from bottom-to-top?
- [Biology] Among people without chronic eye conditions, how much variance is there in the highest wavelength of light they can 'see'?
- Fukushima : How does "radiation cleanup" work exactly ? What are the metrics ?
| Is it possible to navigate in space?? Posted: 30 Dec 2017 03:52 AM PST Me and a mate were out on a tramp and decided to try come up for a way to navigate space. A way that could somewhat be compered to a compass of some sort, like no matter where you are in the universe it could apply. Because there's no up down left right in space. There's also no fixed object or fixed anything to my knowledge to have some sort of centre point. Is a system like this even possible or how do they do it nowadays? [link] [comments]  |
| The heisenberg uncertainty principle and quantum physics are interesting-- but how is it confirmed? Posted: 29 Dec 2017 02:22 PM PST The way I understand one -aspect- of the heisenberg uncertainty principle is as such-- A neutron, for instance, is 'not in a single location, rather has distinct probabilities of various locations until it interacts with another object'-- I may be butchering the science, as I am but a humble student, but how can we say something like this with a rational scientific mindset? Is it not more reasonable to conclude that we simply don't -know- its' location until it's 'interacted with something? Or is there something i'm missing here? [link] [comments]  |
| Posted: 29 Dec 2017 03:00 PM PST I found this intriguing because the 4th, 5th, and 6th time-derivatives of displacement are snap, crackle, and pop, respectively--those names sound like they lack practical importance (apart from the cereal joke), at least to someone inexperienced like me. [link] [comments]  |
| How were they able to continue to operate Reactors 1-3 after the Chernobyl disaster? Posted: 29 Dec 2017 09:30 AM PST After the Chernobyl disaster there were still 3 reactors that were operable and remained in operation for years afterwards. I'm not familiar with nuclear power plants, but I would assume that their operations are somewhat similar to other plants like refineries and chemical plants. You have to have operators in a control room, operators making rounds in the "field," and a maintenance crew to perform routine maintenance on the equipment. So, how was the staff able to continue working at the site when the city had to be deserted due to the radiation? [link] [comments]  |
| Why is the speed of light expressed as 'c'? Posted: 29 Dec 2017 01:38 PM PST |
| If A Railgun Fired in Space, Would There Be Recoil? Posted: 29 Dec 2017 08:33 AM PST I understand that the force applied to the projectile follows the "right hand rule", and by Newton's third law I know that for every action there is an equal and opposite reaction, but does this apply to electromagnetic forces? Would a Railgun therefore require stabilizing thrusters if it was in space? (No matter how tiny the projectile, I imagine that eventually it would be off stable orbit) [link] [comments]  |
| Does giving blood change your vascular system? Posted: 29 Dec 2017 08:09 AM PST Hi, I give blood regularly and I've noticed, probably just like many others, that giving blood gets easier with time. Which made me wonder about three things:
Thanks! [link] [comments]  |
| How quickly does our body identify nutritious intake of substances? Posted: 29 Dec 2017 05:54 AM PST Think of when you're a bit hungry, and you eat a PB-jelly sandwich. The (slight) hunger goes away quite quickly, but I imagine the digestion process takes quite some time. What if I ate indigestible food with the same texture that my body couldn't break down? Could I fool my belly/brain? How does our body regulate hunger and how quickly and accurately can it do it actually? [link] [comments]  |
| Posted: 29 Dec 2017 08:26 AM PST |
| Eureka moments; what are they, really? Posted: 29 Dec 2017 09:09 AM PST When we read or hear about the famous 'light bulb' moments in science, are these sparks of new insight from genius minds or are they the moments when thoughtful people, after lengthy study and pondering, finally understand something fundamental about a known or theorized concept? [link] [comments]  |
| Is the entire atmosphere of ice and gas giants opaque? Posted: 29 Dec 2017 07:06 AM PST I've read descriptions about what it would be like to fall onto Jupiter's "surface" but none of them talked about what a human would see. Since the gaseous part of the atmosphere is mostly hydrogen and helium, both colorless gasses, I imagine that once you get through the upper clouds you can start to see what you're falling into. As far as I know, there is no liquid layer even in the ice giants. It just is a gas that slowly gets more and more dense until it's "basically" a liquid and then "basically" a solid. But why would this state of matter be opaque? After a certain point falling into Jupiter, for example, couldn't you start to see light from the extremely hot core/metallic hydrogen? Or is it that like how water appears clear, but after a few miles of it no visible light gets through? [link] [comments]  |
| Posted: 29 Dec 2017 01:53 PM PST Water is a naturally occurring chemical, and so is salt. Neither of these products necessarily need to come from an animal or plant, or any other organism. They are not living, and do not come from anything that has lived. Are there ANY other products that we can (and normally do) eat, that are like this? [link] [comments]  |
| What would happen if the ballast tanks on a ship were a vacuum? Posted: 29 Dec 2017 04:28 AM PST |
| How does rain affect airplane drag and lift? Posted: 29 Dec 2017 09:18 AM PST |
| How do laser pointers damage the human eye? Posted: 29 Dec 2017 05:35 AM PST |
| Why do the pictures on thermochromic mugs fade in from bottom-to-top? Posted: 29 Dec 2017 04:26 AM PST Why do the pictures on thermochromic mugs appear from bottom to top, like in this video? I thought maybe it was because in the video it was filled but slowly. So I just tried it with my own mug and filled it up quickly to the top, and saw the same slow bottom-to-top fade. Is there some effect which causes the bottom of the mug to heat faster than the upper parts? [link] [comments]  |
| Posted: 29 Dec 2017 08:12 AM PST Online sources report that a typical person can see light in the wavelength range 390nm-700nm. I'm interested to know how consistent those limits are from individual to individual, among people with generally good eyesight. Just as some individuals have exceptional eyesight (as good as 20/10, 'twice' as good as 20/20), are there individuals that can perceive 740nm wavelength light, or 770nm? And are there individuals that lack the ability to perceive 660nm wavelength light? [link] [comments]  |
| Fukushima : How does "radiation cleanup" work exactly ? What are the metrics ? Posted: 29 Dec 2017 07:07 AM PST |
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