What would happen if you shine a green flashlight in a spaceship going 0.5c? |
- What would happen if you shine a green flashlight in a spaceship going 0.5c?
- If a person is unconscious on a spinning object, will they wake up dizzy or not?
- What is the difference between supercritical fluid and plasma?
- How do we know that photons have spin 1?
- What's the difference between sugars found in vegetables/fruits and sugars found in refined grains/candy? Why is the latter worse for us?
- How much of the internet is now bot-on-bot traffic?
- How are spacesuits sealed from the vacuum of space when assembled?
- Do nuclear bombs create shrapnel (albiet useless), or is the metal casing instantaneously vaporized?
- Can a totally decayed element still produce radiation? Am I understanding the concept of radiation correctly?
- What advances would be required for us to see galaxies farther beyond the 700 million year mark?
- Why can't we just use solar panels and wind turbines on aircrafts to give them a better efficiency?
- What happens when the human immune system encounters a bacterium it has seen before?
- In the scene from Passengers where Jennifer Lawrence is trapped in a swimming pool during zero gravity, would a human really have a hard time escaping the water in these conditions?
- What is the earliest record we have of humans supplementing their diet with spicy (hot) foods?
- How do we know that Lucy is a direct human ancestor?
- What are Sub Shells in Regards to Electron Configuration?
- Can send superfast wifi though space?
- What is the significance of this invention?
- Is Anti-M production after transfusion due to antigen recognition?
- What, chemically distinguishes rocks from other solid chemicals (I.E. metal)?
- Why does MDMA affect serotonin levels when it is structurally similar to dopamine?
| What would happen if you shine a green flashlight in a spaceship going 0.5c? Posted: 06 Mar 2017 03:48 AM PST Would the light turn blue as you point it forwards, and red when you point it backwards? [link] [comments]  |
| If a person is unconscious on a spinning object, will they wake up dizzy or not? Posted: 05 Mar 2017 06:41 PM PST |
| What is the difference between supercritical fluid and plasma? Posted: 06 Mar 2017 01:51 AM PST |
| How do we know that photons have spin 1? Posted: 06 Mar 2017 05:57 AM PST |
| Posted: 05 Mar 2017 02:40 PM PST |
| How much of the internet is now bot-on-bot traffic? Posted: 05 Mar 2017 12:08 PM PST |
| How are spacesuits sealed from the vacuum of space when assembled? Posted: 05 Mar 2017 03:17 PM PST I understand that the space suit provides air pressure to keep the fluids in your body in a liquid state, and that the suits are assembled in different pieces for the limbs and such. But how are these separate pieces sealed from the vacuum of space when assembled? (i.e. where the separate pieces connect) [link] [comments]  |
| Do nuclear bombs create shrapnel (albiet useless), or is the metal casing instantaneously vaporized? Posted: 05 Mar 2017 12:07 PM PST |
| Posted: 06 Mar 2017 02:42 AM PST Hello! I am currently doing a research regarding radiation and its effects to our body. Being a total stranger about radiation (not to mention the need of reviewing that I need to do to refresh my basic chemistry skills), as the title states, does radiation stop once an element is fully decayed? So far, in general, in terms of radiation of elements, each has a half life wherein elements slowly decay. As an element decays, it gives out an ionizing radiation. Finally, I want to make sure that I am understanding the general concept of radiation correctly: Ionizing radiation comes in different forms (alpha, beta, and gamma). Alpha is less likely to cause harm to our body as their waves cannot really make it past our skin's dead skin cell. Beta radiation, on the other hand, can be blocked by our clothes and therefore a regular lab coat would be sufficient to act as protection. Finally, Gamma radiation is the meanest of them all as it can travel really far and a person needs to be fully geared by lead shields in order to be safe. Is this correct? *EDIT: Also, I found out that, when swallowed/inhaled, Alpha radiation can cause severe damage (even death). If that is the case, how come we are not being poisoned by the potassium in our body or whenever we eat bananas Any information and/or articles with good reads regarding this topic would be greatly appreciated! Thanks in advance! [link] [comments]  |
| What advances would be required for us to see galaxies farther beyond the 700 million year mark? Posted: 05 Mar 2017 02:52 PM PST |
| Why can't we just use solar panels and wind turbines on aircrafts to give them a better efficiency? Posted: 06 Mar 2017 04:14 AM PST |
| What happens when the human immune system encounters a bacterium it has seen before? Posted: 05 Mar 2017 11:02 AM PST I know what happens when the immune system meets a bacterium for the first time, including cell-mediated and humoral response but what happens when it meets a bacterium it has seen before? [link] [comments]  |
| Posted: 05 Mar 2017 10:51 AM PST |
| What is the earliest record we have of humans supplementing their diet with spicy (hot) foods? Posted: 05 Mar 2017 12:54 PM PST It's my understanding that spicy foods such as hot peppers contain the chemical capsaicin. Humans have no taste receptors for capsaicin. Rather, capsaicin activates the pain receptors in the tongue and mouth. This causes no damage. There is no physical harm even though we refer to the sensation as burning. Many birds do not have pain receptors that react to capsaicin. So, I have always assumed birds were selected as a vehicle to spread the seeds of hot peppers because they would spread them farther whereas they deterred humans and other animals by causing pain. Humans, at some point, realized that spicy hot foods effect us in a weird way. Capsaicin causes pain which releases endorphins in the brain. This endorphin rush makes spicy foods a conditioned food source for us. I have always assumed Humans circumvented this defense mechanism of the hot pepper, but is that true. What is the earliest evidence we have of humans supplementing their diet with spicy (hot) foods? At what point did we circumvent this defense mechanism? Additional: I have heard of scientists analyzing scat in anthropology/archeology digs. Can we determine capsaicin from these digs? Also, I am assuming a lot in the above question. Please correct anything I have written. [link] [comments]  |
| How do we know that Lucy is a direct human ancestor? Posted: 05 Mar 2017 11:13 AM PST Hey - fairly simple question I'm having trouble googling. How do we know that Lucy is a direct human ancestor and not just some other random ape/hominid? Besides the fact that her body fits our theories for a transition from ape to human, is there some other kind of evidence that proves Lucy is a part of our ancestry and not some random offshoot of another ape line? (If that makes sense). [link] [comments]  |
| What are Sub Shells in Regards to Electron Configuration? Posted: 06 Mar 2017 12:20 AM PST |
| Can send superfast wifi though space? Posted: 06 Mar 2017 06:08 AM PST So i know currently the technology isnt viable to say video chat on mars like a concept on the film The Martian, because wifi/microwave signals cant travel fast enough leaving like a 21 minutes delay or summit. But ive heard of superfast internet that uses superfast flickering led lights to transmit wifi signals boosting currant tech- i heard this a few years ago that maybe a Edinburgh university had been testing and was going to be realised but i dont know what happened. So my question is:- can we send faster internet signals using superfast flickering led lights presumably at the speed of light? I will add as people will just poke holes in my unperfect grammer and logic. - i mean the leds flash so fast you wouldnt even notice them switching off so no headaches etc as was stated in the article i read - the speed of light naturally being a light source that travels the speed of light [link] [comments]  |
| What is the significance of this invention? Posted: 05 Mar 2017 11:41 PM PST Recently my grandfather, Stuart Libby died, and I am trying to learn more about what he did for a living. It seems like he was the inventor of SuperTan technology, when he worked for Tansitor in the 1980-90s, before they got bought out by Vishay. Below are some links regarding some history of the capacitors. Please tell me the significance of his work, I am eager to know. [link] [comments]  |
| Is Anti-M production after transfusion due to antigen recognition? Posted: 05 Mar 2017 02:33 PM PST What are the most likely causes of anti-M production after an operation? Could it be due to the recognition of M antigens received from a donors blood? [link] [comments]  |
| What, chemically distinguishes rocks from other solid chemicals (I.E. metal)? Posted: 05 Mar 2017 12:07 PM PST |
| Why does MDMA affect serotonin levels when it is structurally similar to dopamine? Posted: 05 Mar 2017 02:39 PM PST Shouldn't it mimic the effects of dopamine? Both are phenethylamines. [link] [comments]  |
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