Why can the Golden Ratio be found all over nature? |
- Why can the Golden Ratio be found all over nature?
- What causes the stinging sensation when you get soap in the eyes?
- Why do Uranus's rings and moons orbit 90 degrees to the sun too?
- Would a sand timer still work the same if the sand grains were boulder-sized and the timer was proportionally larger?
- This BB exits a bubble as soon as the bubble is completely popped. Is there a reason behind this, or just a coincidence?
- When light is slowed by something such as travelling through a medium like water, how does it speed back up when it exits? Wouldn't it require some external energy in order to speed back up?
- Do people who have lost limbs need to eat less?
- Why is a mylar blanket (first-aid blanket) effective against hypothermia/heat loss?
- Since the Earth moves in an ellipse around the sun. How significant is the centrifugal force?
- What are the physics behind an electron microscope that allow it to work?
- How do primatogolists/anthropologists/zoologists like Jane Goodall interact safely with aggressive chimps?
- Why don't the protons in the nucleus of an atom don't repel each other since they have a positive charge?
- How does a revolver cannon align the chamber with the barrel, and yet spin at a high rate? Won't there be potentially fatal issues with alignment?
- What did chemists use before magnetic stir bars?
- When I hear a jet engine, what's actually making the various sounds?
- Why is Xenon so much more reactive than the other noble gasses?
- If the expansion of the universe is supported by cosmic microwave background radiation, how can the universe be expanding exponentially?
- If octopi are entirely soft-bodied all the way through; where do their muscles anchor that they can still pull and push with their arms?
- If I release the gas pedal on a car while moving, only braking on the gears, would the car use any fuel?
- [Astronomy]Is it possible to have an orbit around the earth and the moon?
- Is it necessary for all theories of physics to have an axiomatic mathematical system to build upon?
| Why can the Golden Ratio be found all over nature? Posted: 26 Mar 2016 07:26 AM PDT I've been looking into the golden ratio( fibonacci sequence) and I'm curious why it shows up in nature in many different places. Why does a geometric ratio play such importance that it withstood evolution? Edit: Thanks reddit for collectively taking my Front Page V-card. What are some applications of the golden ratio not related to biology and nature? [link] [comments]  |
| What causes the stinging sensation when you get soap in the eyes? Posted: 26 Mar 2016 09:04 PM PDT I'm curious about the mechanism - how do detergent molecules (or other components of soap) trigger a pain response? And in the case of baby shampoo and similar substances, how do they avoid triggering this response? [link] [comments]  |
| Why do Uranus's rings and moons orbit 90 degrees to the sun too? Posted: 26 Mar 2016 07:08 AM PDT |
| Posted: 26 Mar 2016 05:51 PM PDT |
| Posted: 26 Mar 2016 11:35 PM PDT I saw this gif on another sub. Couldn't help but notice that the BB pellet exits the bubble as soon as it is fully popped. Is this just a coincidence, or something more? [link] [comments]  |
| Posted: 26 Mar 2016 02:13 PM PDT |
| Do people who have lost limbs need to eat less? Posted: 26 Mar 2016 11:35 AM PDT Assume a person is sedentary before and after their loss of limb. I would assume that they need to eat much less after, because there is less total body mass that they have to maintain. If this is true:
If this isn't true:
[link] [comments]  |
| Why is a mylar blanket (first-aid blanket) effective against hypothermia/heat loss? Posted: 26 Mar 2016 03:07 PM PDT How can something so thin and flimsy be so good at keeping heat where it is? [link] [comments]  |
| Since the Earth moves in an ellipse around the sun. How significant is the centrifugal force? Posted: 26 Mar 2016 10:48 PM PDT |
| What are the physics behind an electron microscope that allow it to work? Posted: 26 Mar 2016 02:08 PM PDT I know that it uses a beam of electrons that somehow allow it to compile an image. And since the wavelength of electrons is much shorter than visible light the microscope will have a higher resolving power and be able to see more detail. But I'm wondering what the actual physics are at work, and how the microscope compiles them together. This is my first post so I'm sorry if it is unclear! Fell free to ask for clarification if I wasn't! [link] [comments]  |
| Posted: 26 Mar 2016 03:20 AM PDT |
| Posted: 26 Mar 2016 01:10 PM PDT |
| Posted: 26 Mar 2016 04:08 AM PDT Hi! I'm very curious about firearms and mechanisms, even though I'm not an engineer, and I'd really appreciate any help with my understanding how these things work. In a Gatling gun, each barrel has its own chamber, so you don't have to worry about making sure the cartridge is aligned with the barrel before firing it- the entire assembly is being rotated. In a revolver handgun, the cylinder stops moving before each cartridge is fired, which means you could design a mechanism to lock and align each chamber with the barrel, avoiding alignment problems. However, in a revolver cannon, I see problems with either approach. If you stop the cylinder and lock it before firing each cartridge, you run into the problem of accelerating and stopping a pretty heavy cylinder repeatedly (in the order of thousands of rounds a minute), which I imagine puts immense strain on the locking mechanism, and wastes a lot of energy in applying such high opposite accelerations. On the other hand, if you keep the cylinder spinning continuously, won't misalignment be a very big risk or problem? A misfire would wreck the entire mechanism and possibly kill your crew. Also, would the momentum of the round cause asymmetrical strain on the barrel, since relative to the barrel, the round is moving to the side while it's being fired? Thanks for reading through all this! [link] [comments]  |
| What did chemists use before magnetic stir bars? Posted: 26 Mar 2016 02:27 AM PDT I always wondered if there was some old device used to stir solutions that took a while to dissolve into complete solution. Or did the chemist just have to sit there stirring manually until the job was done? [link] [comments]  |
| When I hear a jet engine, what's actually making the various sounds? Posted: 26 Mar 2016 03:28 AM PDT |
| Why is Xenon so much more reactive than the other noble gasses? Posted: 26 Mar 2016 03:22 AM PDT |
| Posted: 26 Mar 2016 04:57 AM PDT I've been told that background radiation supports the expansion of the universe, but if the universe is expanding exponentially, how can the linear volume-temperature relation hold true? Sorry for the poorly worded question, I'm still trying to work it out in my head. [link] [comments]  |
| Posted: 25 Mar 2016 09:32 PM PDT |
| Posted: 26 Mar 2016 01:39 AM PDT If I press down the clutch as well I understand it will, because the engine consume some fuel to keep it idle, but if it is braking on the gears wouldn't it be the wheels that kept the engine running? On newer cars with a real-time fuel consumtion display it would show 0.0 liters/100 km, but is this because the newer cars "know" it doesn't need fuel, or would it apply to older cars as well? Sorry if the question was badly phrased, english is not my main language. [link] [comments]  |
| [Astronomy]Is it possible to have an orbit around the earth and the moon? Posted: 26 Mar 2016 08:19 AM PDT |
| Is it necessary for all theories of physics to have an axiomatic mathematical system to build upon? Posted: 26 Mar 2016 11:43 AM PDT I wonder wether some kind of Gödels incompletness theorems apply also to systems of physics. [link] [comments]  |
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