What is the smallest size a fire can be? |
- What is the smallest size a fire can be?
- When someone is sight reading a piece of music, what is happening in their brain? Has anyone ever monitored brain activity during sight reading? If so, Is it similar to when someone reads a language?
- How do seeds determine where's the surface when planted underground?
- Was the fifth force discovered or not?
- What is the standard used to measure elevation on other planets that don’t have a “sea level?”
- Can a dead person left in the sun get a tan?
- A spinning magnet can induce a current in a conductor, this is how a generator work. But what is the average rotational to electrical energy efficiency of these generator?
- What exactly is the dark side of the moon?
- Can I just put a magnet (or a bunch of little ones) on my induction stove to adapt it for all cookware?
- Why is gasoline sold and measured by volume, not mass?
- What makes plutonium and uranium so special?
- Why is it that both the stratosphere and mesosphere are cold while they’re between the troposphere and thermosphere which are hot?
- How do microwaves heat food up?
- Are bubbles airtight? Does it change with different types of bubbles like dish soap bubbles, water bubbles, etc.
- Does the electromagnetic interaction in molecular bonds have a frequency in the electromagnetic spectrum?
- Why do sleepers and rails from the railway track need to be removed and replaced with new ones?
- When people pass out from too much drinking, is that due to low heart rate or something else?
- Why does it take so long to name new elements?
- Pressure drops in Venturi's pipe vs Heat exchanger?
| What is the smallest size a fire can be? Posted: 19 Aug 2018 10:44 PM PDT |
| Posted: 19 Aug 2018 09:56 AM PDT |
| How do seeds determine where's the surface when planted underground? Posted: 20 Aug 2018 02:36 AM PDT I recently planted pea and was wondering if seeds have some kind of gyroscope or gravity sensor to determine in which way they must grow roots and stem. In case of "on the ground" it would be easy to guess that there are some chemicals which reacts in the contact spot with the soil, but underground there is soil everywhere. [link] [comments]  |
| Was the fifth force discovered or not? Posted: 20 Aug 2018 03:36 AM PDT Below is an article about a possible discovery of a particle responsible for soem kind of new force (?). https://www.nature.com/news/has-a-hungarian-physics-lab-found-a-fifth-force-of-nature-1.19957 Article date is at about 2016 and says that in a year some other labs would come with confirmation or not. I'm not sure how to find this out but has there been any development and if possibly what exactly could this 5th force be responsible for? Thank you very much. [link] [comments]  |
| What is the standard used to measure elevation on other planets that don’t have a “sea level?” Posted: 19 Aug 2018 11:09 AM PDT |
| Can a dead person left in the sun get a tan? Posted: 19 Aug 2018 09:45 AM PDT |
| Posted: 19 Aug 2018 09:36 PM PDT |
| What exactly is the dark side of the moon? Posted: 20 Aug 2018 04:06 AM PDT I mean, doesn't it rotate and revolve so all sides get light at some point? [link] [comments]  |
| Posted: 19 Aug 2018 07:21 PM PDT They sell converter disks, but I'm wondering if I could just use magnets. What you say you science folk? [link] [comments]  |
| Why is gasoline sold and measured by volume, not mass? Posted: 19 Aug 2018 04:45 PM PDT As far as I know, gasoline's volume varies with temperature and air pressure, much like pretty much everything else. So why do we buy gas and measure fuel efficiency by volume rather than by mass? [link] [comments]  |
| What makes plutonium and uranium so special? Posted: 19 Aug 2018 04:42 PM PDT In reactors or bombs, why do we use these specific elements rather than others? Could you make a fission reactor that worked on carbon or iron or titanium? If it is possible, why don't we? [link] [comments]  |
| Posted: 19 Aug 2018 10:25 AM PDT |
| How do microwaves heat food up? Posted: 19 Aug 2018 02:34 PM PDT So if microwaves have longer wavelengths and less energy than visible light, how do they increase the temperature and thus average molecular kinetic energy of its target (food)? [link] [comments]  |
| Posted: 19 Aug 2018 09:25 AM PDT |
| Posted: 19 Aug 2018 12:14 PM PDT The question that I want to ask is actually broader than the one in the title. Do all the interactions that the fundamental force of electromagnetism regulates have a frequency? If not,then how can the photons responsible for the force be emitted without a frequency? I'm sorry if this is somehow a stupid question [link] [comments]  |
| Why do sleepers and rails from the railway track need to be removed and replaced with new ones? Posted: 19 Aug 2018 08:09 AM PDT |
| When people pass out from too much drinking, is that due to low heart rate or something else? Posted: 19 Aug 2018 10:16 AM PDT I ask because i had a drink tonight and after getting up to use the bathroom. I felt my heart rate slow down and my fitbit recorded it to be 25 to 30... i felt light headed and very dizzy. I had one drink lol [link] [comments]  |
| Why does it take so long to name new elements? Posted: 19 Aug 2018 05:30 PM PDT Nihonium was first synthesized in 2003. Moscovium was first synthesized in 2003. Tennessine's synthesis was first announced in 2010. Oganesson was first synthesized in 2002. They were given their present names in 2016. Why did the names take so long? [link] [comments]  |
| Pressure drops in Venturi's pipe vs Heat exchanger? Posted: 19 Aug 2018 10:44 AM PDT Hello to all, my collegue recently came up with really interesting questions, which certainly seems like two chemical engineers should know by default, but we couldn't come up with definite answer... so here it is, when Bernoullis equasion applies to Venturi's pipe, it says that when fluid flows throught narrower area its speed increase but pressure drops...but when it goes to wider area again, speed decreases and pressure increases. If this is applied to heat exchanger ( with situation where there is some fouling in pipes of HE ), why doesn't pressure goes up again when fluid exits heat exchanger system into normal pipe again? EDIT: in other words, shouldn't principle be the same in Venturi's pipe and pipe's in heat exchanger with some fouling? Thank you very much [link] [comments]  |
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