On an atomic level, what causes things to be shiny, dull, or reflective ? |
- On an atomic level, what causes things to be shiny, dull, or reflective ?
- How effective are amber alerts and other such mass notifications?
- Why is most of the gold in the world found in Africa?
- On a molecular level, why is sugar sticky when wet?
- Why does a geiger counter use that odd static noise instead of something else?
- Why does turning on a second light not make a room seem twice as bright?
- Why do terrestrial objects in space move so slowly compared to the speed of light?
- Are the current health food trends such as non-GMO and organic better or worse for the environment and sustainability?
- What's the minimum density required for a gas to make us able to hear/make a sound?
- What are the 3% of climate change papers which disagree with anthropomorphic change?
- How can Astronomers calculate the orbital speed of stars in different galaxies?
- Is there any landform that has both existed since the formation of the Earth, and has never once been submerged under a body of water?
- How come it took so long for humanity to develop the concept of interchangeable parts?
- What's the difference between bacteria in fermented foods that some advocate for us to consume, and bacteria in water sources that are dangerous for consumption?
- Is there enough iron oxide concentration on the surface of Mars to create a self sustaining Thermite fire to release oxygen if enough aluminum powder was introduced?
- Why in a video do fast spinning objects appear to spin backwards momentarily then spin fowards again?
- Can a spaceship descend slow enough to Earth that it wouldn’t encounter the intense heat generated upon reentry?
- Have the giant trash patches of the ocean (some maybe the size of texas) developed ecosystems? What animals are part of that?
- Why do atoms have electrons instead of muons?
- Do the muscles in the heart and lungs become fatigued?
- Why is TESS exciting?
- Is it possible to make a molecule large enough to see with the naked eye?
| On an atomic level, what causes things to be shiny, dull, or reflective ? Posted: 06 Apr 2018 03:15 AM PDT |
| How effective are amber alerts and other such mass notifications? Posted: 05 Apr 2018 05:58 PM PDT |
| Why is most of the gold in the world found in Africa? Posted: 06 Apr 2018 02:29 AM PDT |
| On a molecular level, why is sugar sticky when wet? Posted: 06 Apr 2018 07:44 AM PDT |
| Why does a geiger counter use that odd static noise instead of something else? Posted: 05 Apr 2018 08:23 PM PDT |
| Why does turning on a second light not make a room seem twice as bright? Posted: 05 Apr 2018 02:52 PM PDT When you turn on a light in a dark room, it obviously gets much brighter. But if you turn on a second, identical light, the difference in brightness is almost indiscernible. Why? Is it just because of our pupils constricting more, or is something else happening? [link] [comments]  |
| Why do terrestrial objects in space move so slowly compared to the speed of light? Posted: 06 Apr 2018 07:51 AM PDT The fastest asteroid on record was moving at only 64,000 which is about Earth's orbital speed around the sun. That's fast but stars close to the super massive black hole in the center of our galaxy are moving as speeds close to 15,000,000 mph. That's fast but only about 2% of the speed of light. There are billions of black holes accelerating objects as they pass close by, and there is no drag in space other than perhaps flying through a gas cloud. Could Earth some day get hit with an asteroid shot from our galaxy's center moving at say just 5% of the speed of light? I imagine a five mile wide object moving at 35,000,000 mph would never be detected and would release enough energy to annihilate the planet. [link] [comments]  |
| Posted: 06 Apr 2018 07:44 AM PDT Curious if there are bigger picture problems we are disregarding when consumers demand organic and non-GMO. It seems like that's all you can find in the stores these days, whether you actually want it or not. [link] [comments]  |
| What's the minimum density required for a gas to make us able to hear/make a sound? Posted: 06 Apr 2018 02:31 AM PDT So I ask this from a "human" standpoint. I'm talking about sound we're able to hear. Thanks! [link] [comments]  |
| What are the 3% of climate change papers which disagree with anthropomorphic change? Posted: 06 Apr 2018 04:48 AM PDT We often hear that 97% of peer reviewed papers agree with the common stance on climate change: that it is happening and human activity is the cause. I'm interested in the other 3%. Are they all old? Or very narrow in scope? Or do they have interesting things to add to the conversation? Is there anything similar in other areas of science? Surely there aren't 3% of physics papers arguing against quantum theory, or medical papers in favour of homeopathy. [link] [comments]  |
| How can Astronomers calculate the orbital speed of stars in different galaxies? Posted: 06 Apr 2018 05:49 AM PDT One of the main reasons (I believe) that astronomers believe dark matter exists is because the stars in galaxies orbit too fast to be held in orbit only by the gravity of the visible matter. How can they tell they speed orbital speed of object so far away? Surely their movements would be imperceptible. [link] [comments]  |
| Posted: 05 Apr 2018 09:49 PM PDT |
| How come it took so long for humanity to develop the concept of interchangeable parts? Posted: 06 Apr 2018 06:57 AM PDT https://en.m.wikipedia.org/wiki/Interchangeable_parts There was evidence of interchangeable parts over 2,000 years ago, but it never caught on for some reason. Why did it take so long? I feel like there must've been a bunch of scientists at the time who, afterwards, said "Gee, I wish I'd thought of that!" As a side note, it's often said that you can't make something that fits all of these requirements, but interchangeable parts are better, cheaper, and faster. [link] [comments]  |
| Posted: 05 Apr 2018 07:05 PM PDT |
| Posted: 05 Apr 2018 07:49 PM PDT |
| Posted: 06 Apr 2018 04:39 AM PDT Like in this (https://www.reddit.com/r/blackmagicfuckery/comments/8a6xcr/this_some_mad_scientist_level_black_magic/) post. [link] [comments]  |
| Posted: 05 Apr 2018 10:08 PM PDT If a craft was able to decelerate to a slow enough speed, could it gently fall back to earth using vector rockets (or something) and main thrust to keep the descent slow enough or would it be unable to punch through the Earth's atmosphere? Less heat and constant radio communication are cool, right? (Pun intended). [link] [comments]  |
| Posted: 05 Apr 2018 01:23 PM PDT After seeing this https://news.nationalgeographic.com/news/2009/09/photogalleries/pacific-garbage-patch-pictures/photo4.html a while ago I have become curious as to how deep ecosystems that exist because of the garbage patches are an what they look like. It seems like there are lots of places for small animals to hide, which means there could be a lot of food for potential predators. And since its all garbage I imagine there is a decent amount of nutrients that at least at one time have clung to the garbage, which can be used as food. I am not supporting litter. I am just wondering what out waste has created. Thank you. [link] [comments]  |
| Why do atoms have electrons instead of muons? Posted: 05 Apr 2018 05:24 PM PDT |
| Do the muscles in the heart and lungs become fatigued? Posted: 05 Apr 2018 12:20 PM PDT |
| Posted: 06 Apr 2018 02:46 AM PDT TESS the transisting exoplanet survey satellite is scheduled to launch soon, what are the benefits of TESS compared to other planet hunting hardware and when should we expect to hear about it's first discoveries? [link] [comments]  |
| Is it possible to make a molecule large enough to see with the naked eye? Posted: 05 Apr 2018 05:37 PM PDT |
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