If somebody loses a lot of blood, how do doctors tell so fast wich blood type the patient has and exactly how much blood was lost/needs to be transfused? |
- If somebody loses a lot of blood, how do doctors tell so fast wich blood type the patient has and exactly how much blood was lost/needs to be transfused?
- When listening to the radio in a traveling vehicle and then going through a tunnel, and the audio of the song/news turns to static, what is being played through the radio if the signal is lost, as in, what provides the 'static' sound?
- What does it mean to say that the Benzene molecule is 126-dimensional?
- Why does the Earth's crust have different densities? Like how is oceanic crust always more dense than continental crust? Is this a way to determine if a dead planet had an ocean or not?
- Why do brass instruments go flat in cold air, and sharp in warm air?
- Are oceans caustic and not acidic? Does the pH level ever go below 7.0?
- What are the differences between AC and DC, and why does AC last so much for further distances?
- What is the difference between high energy X-rays and gamma rays?
- Do tectonic plate shifts affect railways/roads etc over noticable time?
- Do bird calls and songs change similar to how our language changes through time?
- Are neutrino flavor and mass canonically conjugate variables?
- How has the number of species on Earth changed over time?
- How Does Ammonium-Chloride Based Sanitizers Work?
- If the sky is blue because blue light gets scattered more in the atmosphere, why it is said that the sunset is orange because all the blue light got scattered and is missing? Shouldn't the sky look even more blue then?
- Do animals have different sounding voices like humans do?
- What triggers an itchy feeling and what are we doing by scratching the area?
- Why is Venus hotter than Mercury despite being farther from the sun ?
| Posted: 06 Mar 2020 01:29 AM PST |
| Posted: 05 Mar 2020 07:03 PM PST Thank you everyone for all the informative responses. Much obliged :) [link] [comments]  |
| What does it mean to say that the Benzene molecule is 126-dimensional? Posted: 05 Mar 2020 09:54 PM PST Recently I have read many reports in the news that scientists have finally "figured out" the Benzene molecule and that it was so difficult to do because Benzene is 126-dimensional. What exactly does it mean to say that a molecule, such as Benzene, is (in this case) 126-dimensional? [link] [comments]  |
| Posted: 06 Mar 2020 04:22 AM PST |
| Why do brass instruments go flat in cold air, and sharp in warm air? Posted: 05 Mar 2020 04:34 PM PST Shouldn't it be the other way around? Such that cold air makes the metal contract, making the instrument smaller and the pitch go up, and warm air expanding the metal, making the instrument larger and the pitch go down. [link] [comments]  |
| Are oceans caustic and not acidic? Does the pH level ever go below 7.0? Posted: 06 Mar 2020 04:01 AM PST Some say elevated levels of carbon dioxide strive to cause seawater to be acidic, is this true? [link] [comments]  |
| What are the differences between AC and DC, and why does AC last so much for further distances? Posted: 05 Mar 2020 02:26 PM PST |
| What is the difference between high energy X-rays and gamma rays? Posted: 05 Mar 2020 04:17 PM PST I am familiar with the electromagnetic spectrum and the relationship between energy and wavelength. From my understanding, the only difference between a radio wave and visible light is the energy level of the photon. Same is true (sorta) between X-rays and gamma rays with the exception of where they came from (X-rays from electron cloud and gamma rays from the nucleus). What's confusing me is this; gamma rays are more energetic and therefore potentially more dangerous. But, is this still true when comparing them to very high energy X-rays (MeV)? What is the difference between a high energy X-ray photon and low energy gamma ray photon? Is the only difference their origin? [link] [comments]  |
| Do tectonic plate shifts affect railways/roads etc over noticable time? Posted: 05 Mar 2020 08:47 PM PST I know the shifts are very slow but can they affect roads specially railway tracks. If so how arey the tracked/checked? [link] [comments]  |
| Do bird calls and songs change similar to how our language changes through time? Posted: 05 Mar 2020 08:37 AM PST |
| Are neutrino flavor and mass canonically conjugate variables? Posted: 05 Mar 2020 02:21 PM PST I've been reading about neutrino oscillations and ran into the fact that the flavor eigenstate can be written as a linear combination of mass eigenstates for the three neutrinos (and vice versa) and the relative frequencies of their evolution dictate the flavor oscillation of the system. In typical oscillators we have position and momentum as canonically conjugate variables. Is there a similar conjugate variable for neutrino oscillations? Specifically, are neutrino mass eigenstates and flavor eigenstates canonically conjugate? [link] [comments]  |
| How has the number of species on Earth changed over time? Posted: 05 Mar 2020 02:09 PM PST It is obvious that the number of species on Earth would have increased for many millions if not billions of years after the last universal common ancestor (LUCA) but has the number been increasing ever since or did we reach a plateau some time in the past? Is there a time in the past where we think that there was a greater diversity than today (excluding species that have disappeared because of human actions)? Also, if I is near impossible to accurately predict the amount of species currently alive, how can we estimate the diversity present millions and billions of years ago? Thanks for your answers [link] [comments]  |
| How Does Ammonium-Chloride Based Sanitizers Work? Posted: 05 Mar 2020 01:28 PM PST I work in the service industry and we're taking extra precautions because of COVID19 to protect customers and employees. What I wanted to know was how Ammonium-Chloride based sanitizers work. What is required for it to act as a sanitizer? Does it need to sit on a surface and dry on its own before viruses / bacteria are made inactive? I know soaps can render the sanitizer inert but I'd like more info if possible. Not sure whether to flair this as biology or as chemistry, so I'll just go with chemistry for now. [link] [comments]  |
| Posted: 05 Mar 2020 12:56 PM PST |
| Do animals have different sounding voices like humans do? Posted: 05 Mar 2020 05:23 AM PST |
| What triggers an itchy feeling and what are we doing by scratching the area? Posted: 04 Mar 2020 10:44 PM PST |
| Why is Venus hotter than Mercury despite being farther from the sun ? Posted: 05 Mar 2020 01:18 AM PST |
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