Why is nuclear fusion 'stronger' than fission even though the energy released is lower? |
- Why is nuclear fusion 'stronger' than fission even though the energy released is lower?
- How can Antiprotons annihilate with Neutrons?
- How are astronomers able to determine the spin of a black hole?
- Do all elements have isotopes and how many can there be?
- How do charge and mass come from quarks and friends ?
- Can you concentrate sound into a ‘laser’?
- How does electronegativity affect the distribution of electrons in a molecule?
- What are the curves in the bifurcation diagram of the logistic map?
- Why does getting a vaccine leave the point of injection so sore? Why do some vaccines hurt more than others?
- What can the James Webb telescope see that hubble can't?
- What determine the melting and boiling point of a material?
- What's the reason behind unpronounced letters?
- Is it possible to achieve a gun-type nuclear fission reaction on a small scale?
- Do people born without a limb still feel phantom pain?
- Are there organisms better suited to recycling carbon dioxide into oxygen in a post-apocalyptic/off-planet scenario for human consumption than trees and if so what magnitude of efficiency do they provide?
- What are deja-vu’s exactly and can they be scientifically explained?
- How is the Power of Microwaves determined?
- What's the name of the cloud formation occurring on top of a volcanic pillar?
| Why is nuclear fusion 'stronger' than fission even though the energy released is lower? Posted: 11 Jan 2019 04:30 AM PST So today I learned that splitting an uranium nucleus releases about 235MeV of energy, while the fusion of two hydrogen isotopes releases around 30MeV. I was quite sure that it would be the other way around knowing that hydrogen bombs for example are much stronger than uranium ones. Also scientists think if they can keep up a fusion power plant it would be (I thought) more effective than a fission plant. Can someone help me out? [link] [comments]  |
| How can Antiprotons annihilate with Neutrons? Posted: 11 Jan 2019 01:52 AM PST I thought annihilation requires a particle and its specific anti-particle but I read in a book about antimatter that antiprotons annihilate with neutrons. How so? [link] [comments]  |
| How are astronomers able to determine the spin of a black hole? Posted: 10 Jan 2019 06:32 PM PST I saw a post about a black hole 300 million l/y away spinning at 50% the speed of light, but how are they able to determine that? As far as I know we are barely able to see Sagittarius A*. [link] [comments]  |
| Do all elements have isotopes and how many can there be? Posted: 11 Jan 2019 12:45 AM PST Correct me if I am wrong, this is my understanding—an isotope is elementally the same except it has a different number of neutrons. So for instance, there is the carbon-12 atom which has 6 protons neutrons and electrons, now how many isotopes of this element can there be? When I search for carbon isotopes I only seem to find carbon-12 to carbon-14, so why is that? can there be a carbon-100? and do other elements have isotopes like this as well? do gases have isotopes? is there a helium-10 or something? [link] [comments]  |
| How do charge and mass come from quarks and friends ? Posted: 11 Jan 2019 08:37 AM PST How can we deduce the (electromagnetic) charge and mass of protons/neutrons/electrons from the properties of quarks/muons/leptons ? And where does the constants of forces come from ? (Like the gravity G) Are they purely experimental or can be computed from more basic concepts ? [link] [comments]  |
| Can you concentrate sound into a ‘laser’? Posted: 10 Jan 2019 11:50 AM PST |
| How does electronegativity affect the distribution of electrons in a molecule? Posted: 10 Jan 2019 05:51 PM PST |
| What are the curves in the bifurcation diagram of the logistic map? Posted: 10 Jan 2019 07:05 PM PST In the bifurcation diagram for the logistic map, it appears that there are some long curves of high density in the chaotic region. What are these curves and how do they arise? [link] [comments]  |
| Posted: 10 Jan 2019 09:22 AM PST |
| What can the James Webb telescope see that hubble can't? Posted: 10 Jan 2019 09:00 AM PST |
| What determine the melting and boiling point of a material? Posted: 10 Jan 2019 04:56 PM PST Why tungsten is heat resistant, and why is helium melting's point so low? [link] [comments]  |
| What's the reason behind unpronounced letters? Posted: 10 Jan 2019 09:12 AM PST Started to wonder when thinking about the word 'beaucoup' (french for 'much'). There's languages where words are very long for how much is actually being pronounced. Is it just speakers being too "lazy" over a long time? But why hasn't the written word followed along? [link] [comments]  |
| Is it possible to achieve a gun-type nuclear fission reaction on a small scale? Posted: 10 Jan 2019 04:24 PM PST Hi all, I've been curious about nuclear physics for awhile, and was wondering if theoretically the conditions necessary to generate a supercritical mass for fission could be achieved on a very small scale through particle collision (i.e. inside a particle accelerator). Essentially, would it be possible to shoot particles of U-235 and Pu-239 at each other inside a high-speed particle accelerator/cyclotron and produce nuclear fission akin to larger gun-type atom bombs, like Little Boy? Or is there a certain mass threshold or other characteristics that would prevent this from happening? I know the required ratio of Uranium to Plutonium for such a reaction is abnormally high, but is it even possible? (P.S. I swear I'm not a terrorist) [link] [comments]  |
| Do people born without a limb still feel phantom pain? Posted: 10 Jan 2019 08:56 AM PST |
| Posted: 10 Jan 2019 09:03 AM PST I've been considering the implications of a post-oxygen humanity and I'm wondering if the best way to generate oxygen for an individual human (or society of humans) is to utilise trees, or if there are more viable sources of oxygen from natural sources in a world without oxygen or with drastically reduced available oxygen. Is there any current research to support the use of non-arboreal organisms and are there any drawbacks, specifically considering that over-oxygenation can lead to hyperventilation? [link] [comments]  |
| What are deja-vu’s exactly and can they be scientifically explained? Posted: 10 Jan 2019 06:16 AM PST |
| How is the Power of Microwaves determined? Posted: 10 Jan 2019 06:08 PM PST I understand how 'frequency' of waves increases it's strength. Microwaves have frequency of around 2.5 Ghz. So, how does the microwave oven power (in watts)? What's the difference between ta 700 watt oven and a 1000 watt oven, if they both emit 2.5 Ghz microwave? [link] [comments]  |
| What's the name of the cloud formation occurring on top of a volcanic pillar? Posted: 10 Jan 2019 10:46 AM PST |
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