Why is it advised to keep using the same antiseptic to treat an open wound? |
- Why is it advised to keep using the same antiseptic to treat an open wound?
- How does brushing your teeth clean your mouth, and has the invention of toothbrushes affected bacterial evolution?
- How are atoms aranged?
- Do we observe the handful of stars orbiting the Milky Way's central black hole moving slower during their perigees due to the intense gravity?
- Since radioactive elements have half lives, why do we still have an abundant amount of certain unstable elements?
- What field arises when a charged particle is changing in acceleration?
- Does downloading a podcast make my phone heavier?
- [Plant Biology] Why do some nuts like pecans and walnuts have "grooves" that look like brains?
- If gravity can bend light, is it possible for light emitted from the front of an object to strike the rear of an object if it is above a gravitationally significant object?
- How are we able to detect antimatter?
- Why does a toy boat in a bath-tub behave as sped up real-size version boat, and if we were shrunk down to same scale, would it appear to be normal again?
- When and how was the drift speed of an electron first measured?
- What is a virtual state?
- Can someone explain causal fermion systems and the Dirac Sea to me in "smart layman's terms"?
- Is antigravity a thing?
- Can tendrils in nebulae form planets without a parent star?
- For a given problem, is there a theoretical lower bound on how fast any algorithm can solve it?
- Is there any directional orientation (up, down, left, right) of the universe or have humans just kind of reconciled it with Earth's position because it's the only reference point that matters to us so far?
- Why do unpaired electrons always align with an applied B field, but unpaired nucleons do not?
- What astronomical force allows a repeller to push a galaxy?
- We can see yellow even though we do not have visual receptors for yellow. Why can't we see ultraviolet and infrared?
| Why is it advised to keep using the same antiseptic to treat an open wound? Posted: 24 Mar 2017 03:14 AM PDT Lots of different antiseptics exist with different active ingredients, but why is it bad to mix them? [link] [comments]  |
| Posted: 23 Mar 2017 07:41 AM PDT |
| Posted: 23 Mar 2017 11:01 PM PDT I know that there are protons and neutrons in the core with electrons orbiting around them, but how are the protons and neutrons aranged? Is it completly random? Is there an order? Is there a difference if the atom just got created by fusion? I'm currently making a project for school don't want to do anything wrong. [link] [comments]  |
| Posted: 23 Mar 2017 11:55 PM PDT Since a distant observer sees an object moving more and more slowly as it approaches an extremely massive object, do we see this manifested in the stars that orbit close to the central supermassive black hole? Or, do they just not get close enough to have the effect be measurable. Basically...Do we observe on some level what happened in "Interstellar"? [link] [comments]  |
| Posted: 23 Mar 2017 01:37 PM PDT Say you have a naturally occurring isotope with a half life of 100 years. There is a current estimate of 100 tons of it on Earth right now. Does that mean in 1,000 years there will be hardly any left unless created by humans? Why is there still any naturally occurring isotopes left on Earth if they have short half lives? [link] [comments]  |
| What field arises when a charged particle is changing in acceleration? Posted: 23 Mar 2017 10:23 PM PDT To my understanding, static electric fields arise from stationary charges, magnetic fields from moving charges, and radiation fields from accelerating charges. But what is the resulting field when a charge jerks or more generally has higher order (non-zero) time-derivatives in position? [link] [comments]  |
| Does downloading a podcast make my phone heavier? Posted: 24 Mar 2017 01:29 AM PDT |
| [Plant Biology] Why do some nuts like pecans and walnuts have "grooves" that look like brains? Posted: 23 Mar 2017 08:04 AM PDT |
| Posted: 23 Mar 2017 06:25 PM PDT For example, if I had a flashlight and turned it on a certain distance from a black hole, could the light bend around the black hole and hit my back? [link] [comments]  |
| How are we able to detect antimatter? Posted: 23 Mar 2017 04:04 PM PDT |
| Posted: 23 Mar 2017 08:21 PM PDT I'm really curious on the subject of scale, and forces acting upon objects with different sizes . Does anyone have any links or videos to see? [link] [comments]  |
| When and how was the drift speed of an electron first measured? Posted: 23 Mar 2017 02:16 PM PDT |
| Posted: 23 Mar 2017 03:00 PM PDT I am a chemistry major and when dealing with Raman Spectroscopy, my professor keeps mentioning excitation to a virtual state but cannot explain exactly what a virtual state is. I was under the impression that energy was quantized so that only certain energy levels were available. Feel free to use math in your explanation. I should (hopefully) be able to understand it. [link] [comments]  |
| Can someone explain causal fermion systems and the Dirac Sea to me in "smart layman's terms"? Posted: 23 Mar 2017 10:20 AM PDT Because Wikipedia's article on them are all grad student-level gobbledegook. I need something more on the level of A Brief History of Time or Cosmos. [link] [comments]  |
| Posted: 23 Mar 2017 04:56 PM PDT I know this might be a stupid question, but I'm actually kind of curious. You know how there's antimatter that is a counterpart to matter, I'm wondering if anyone knows how that sort of thing behaves. Also is there any evidence to suggest other "anti-other-important-things-in-the-universe" like antigravity, or antimagnetism, or anything similar to that. [link] [comments]  |
| Can tendrils in nebulae form planets without a parent star? Posted: 23 Mar 2017 09:31 AM PDT |
| For a given problem, is there a theoretical lower bound on how fast any algorithm can solve it? Posted: 23 Mar 2017 11:29 AM PDT For example, the best sorting algorithms run in O(nlogn) time. Is it possible that there are more efficient algorithms 'out there" that are not yet discovered, or is O(nlogn) the hard limit on how fast sorting problems can be solved? If it is the latter case, why is O(nlogn) the limit? Extending this question to any general problem, is there some way to know the lower bound on how fast any algorithm can solve it? Does a lower bound have to exist at all? [link] [comments]  |
| Posted: 23 Mar 2017 12:26 PM PDT |
| Why do unpaired electrons always align with an applied B field, but unpaired nucleons do not? Posted: 23 Mar 2017 09:37 AM PDT The usual explanation for paramagnetism is that an unpaired electron is torqued by an applied magnetic field to align with the field and to generate a magnetic field that adds with the applied field. In NMR, for instance, we know that unpaired nucleons can align with OR against the applied B field. So why do these unpaired electrons always tend to align with the field? In a collection of atoms, each with their own unpaired e-, shouldn't approximately half of them align with an applied field, and half against the field, summing together to provide no paramagnetic effect? [link] [comments]  |
| What astronomical force allows a repeller to push a galaxy? Posted: 23 Mar 2017 07:47 PM PDT Recently it was announced that the 'Dipole Repeller' is pushing the Milky Way Galaxy (see this article). Gravity is a force working on all things in the Universe, but it pulls only. What force repels galaxies? [link] [comments]  |
| Posted: 23 Mar 2017 07:47 PM PDT |
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