- Desiccated spruce branches will curl up or down depending on weather conditions, and have been used as artisanal weather predictors in Eastern North America. What particular properties does the structure of spruce branches have which makes them behave in the way they do?
- How do scientists stop the environment from causing wave function collapse when doing QM experiments?
- How does synesthesia work? Is it possible to acquire/induce it in a non-synesthete brain?
- Did trees bear fruits before there were mammals to eat them?
- Can bugs with an exoskeleton (ants, beetles, scorpions etc.) survive a cracked skeleton or heal themselves?
- How much more energy will fusion of lithium-6 deuteride release than fission of uranium-235?
- Burnt toast tasted very similar to burnt popcorn because it has a distinct "burnt" taste. What is it exactly that we are tasting, and why is it common between completely different foods?
- Why do we grab a part of our body when it gets injured?
- Can we make small, lab-sized, analyzable nuclear explosions?
- [Chemistry] Why does plastic turn white when it's twisted or bent?
- Are seagulls able to drink salt water to stay hydrated? Do they have an internal system to filter salt water?
- How do companies put such specific expiration dates on products that sometimes go years into the future?
- How was helium discovered?
- Why do children wet the bed, yet adults are able to control their bladders even though regardless of age we are both asleep?
- Do larger people have larger organs?
- Is there magnetic field around charge moving with constant linear velocity?
- How do we obtain our gut flora?
- How do you tell a boy vs girl via ultrasound?
- What is the focal length of the human eye(s)? Is it the same for every healthy human?
- Would someone please explain what's going on to cause the effect in this gif?
- When a straight rope is flicked at one end, a 'wave' appears in the rope travels down its length.. What determines the speed at which this wave travels?
- What "pushes" teeth out?
| Posted: 17 Aug 2017 05:27 AM PDT Reference: http://survinat.com/2014/02/spruce-barometer/ I'm particularly curious about what, in the wood structure, induces such a specific directionality to this behavior. [link] [comments]  |
| Posted: 17 Aug 2017 01:26 AM PDT My assumption has always been that things like the double slit experiment must be performed in a vacuum to prevent the air from interfering with the electrons being fired. However, is it possible to completely prevent ALL particles from contaminating the environment? For example photons emitted from the equipment, stray cosmic rays, etc? How is this overcome? [link] [comments]  |
| How does synesthesia work? Is it possible to acquire/induce it in a non-synesthete brain? Posted: 16 Aug 2017 10:06 PM PDT |
| Did trees bear fruits before there were mammals to eat them? Posted: 17 Aug 2017 06:32 AM PDT As per my understanding (which is limited), fruits exist so that mammals will eat them and spit out the seeds far away from the parent tree, spreading the seeds around. Because of this, would it be biologically viable/possible for fruits to exist before mammals had evolved to the point where they could eat them? [link] [comments]  |
| Posted: 16 Aug 2017 07:20 PM PDT |
| How much more energy will fusion of lithium-6 deuteride release than fission of uranium-235? Posted: 17 Aug 2017 12:04 AM PDT In terms of thermonuclear bombs, the secondary stage (comprised of 6LiD which is compressed and heated to induce D-T fusion) supposedly releases many times more energy than the primary stage (comprised of a supercritical mass of U-235 or plutonium with a small amount of deuterium and tritium to boost the explosion) despite there not being a whole lot more material. If you have, say, 1kg of U-235 that undergoes fission and 1kg of 6LiD used in a fusion reaction, how much more energy will the fusion release than the fission? I've heard that it's around 7x more but I can't be sure. [link] [comments]  |
| Posted: 17 Aug 2017 07:24 AM PDT |
| Why do we grab a part of our body when it gets injured? Posted: 17 Aug 2017 07:09 AM PDT For instance, when I get punched in the arm I usually absentmindedly put my arm around that spot. Is it only to protect it from more damage? [link] [comments]  |
| Can we make small, lab-sized, analyzable nuclear explosions? Posted: 17 Aug 2017 06:44 AM PDT |
| [Chemistry] Why does plastic turn white when it's twisted or bent? Posted: 17 Aug 2017 04:28 AM PDT |
| Posted: 16 Aug 2017 03:36 PM PDT |
| Posted: 16 Aug 2017 06:23 PM PDT |
| Posted: 16 Aug 2017 08:09 PM PDT This question bridges history and chemistry but I'm wondering if anyone has better information about the history of Helium's discovery. Did Janssen and Lockyer work together to determine that the yellow line was proof of a new element? And how did Frankland factor in? Did Langlet and Cleve isolate Helium from Uranium ores or did Ramsay? Did two independent discoveries occur at roughly the same time? How controversial was the yellow line discovery? Did most or all of the scientific community accept that as proof of Helium's existence? [link] [comments]  |
| Posted: 16 Aug 2017 04:27 PM PDT |
| Do larger people have larger organs? Posted: 16 Aug 2017 05:14 PM PDT I'm an above average male, 6 foot 7 inches and 240ish pounds. Are my internal organs like my liver or heart significantly larger than someone like my s/o who is 5 foot 5 inches and 130 pounds? [link] [comments]  |
| Is there magnetic field around charge moving with constant linear velocity? Posted: 17 Aug 2017 01:22 AM PDT |
| How do we obtain our gut flora? Posted: 16 Aug 2017 05:37 PM PDT |
| How do you tell a boy vs girl via ultrasound? Posted: 16 Aug 2017 08:43 PM PDT I'm assuming later in pregnancy you can just look for the obvious penis vs. no penis, but in the earlier stages, how can the doctor tell? Is the penis just harder to spot by the untrained eye or are there other ways of knowing? (I tried Googling the answer but the results but the results were all worthless mommy blogs. If anyone knows a good academic resource for questions such as these I'd love to hear about it!) [link] [comments]  |
| What is the focal length of the human eye(s)? Is it the same for every healthy human? Posted: 16 Aug 2017 08:36 PM PDT |
| Would someone please explain what's going on to cause the effect in this gif? Posted: 16 Aug 2017 10:26 PM PDT According to where I saw it, it's ink dropped into alcohol. (sorry I can't be more specific) [link] [comments]  |
| Posted: 17 Aug 2017 05:52 AM PDT |
| Posted: 16 Aug 2017 11:34 AM PDT Came to think of this after discovering my wisdom teeth started coming out in the wrong direction and thus, pushing the rest of the teeth. So how do teeth move forward with such a strong push? [link] [comments]  |
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