How do scientists make sure that the light they are getting is from that particular heavenly body and not a nearby star, like the Sun? |
- How do scientists make sure that the light they are getting is from that particular heavenly body and not a nearby star, like the Sun?
- If mass is the source of gravity, and energy is proportional to mass, can we gravitationally attract objects with energy alone?
- Why is magnesium paramagnetic instead of ferromagnetic since it has more unpaired electrons then Nickel or Cobalt?
- How do we know the mass of quarks when it is impossible to separate them from each other and not knowing the binding energy?
- Are there any stable elements that don't really have any practical uses?
- How do scientist differentiate the wavelengths of different elements from a pinprick of light in the sky?
- How much energy is freed when a element decays?
- Would there be many practical uses for large amounts of Iron 60?
- In space battle, lasers seem important. What are the theoretical limits to the ability to focus a laser and what are the practical limitations?
- How does frozen coastline affect tides?
- Why don't emails arrive immediately like Instant Messages? Where does the email go in the time between being sent and being received?
- Does drinking a lot of soda negatively impact cognitive function?
- Do electrons exist physically or are they so called "virtual" particles?
- How does freezer burn work exactly?
- Is it possible to determine a neutrinos original flavour via rest mass?
- What is the benefit to making new elements in labs?
- What is a Boson?
- Can different species of animals communicate between each other?
- Why do modern chickens lay on average 300 eggs per year, opposed to the average of 100 eggs they were able to lay 100 years ago?
- How does the uncertainty principle work with multiple observers?
| Posted: 07 Jan 2018 11:55 AM PST |
| Posted: 07 Jan 2018 06:43 PM PST If mass is energy, do high-energy fields/particles/etc. create gravity? I know E = mc, and c is huge, so it would require huge energy, but is it reasonable to say that sufficiently high energy creates gravity? Photons are massless but contain energy. Are they gravitationally attracted? Current in a conductor contains energy, is there any gravity there? A massive body has gravity, but if that same massive body has kinetic energy, is there more gravity? Either spinning or moving. My guess is 'no', but I'm hoping to learn something here. thank you [link] [comments]  |
| Posted: 08 Jan 2018 12:20 AM PST |
| Posted: 07 Jan 2018 11:57 AM PST |
| Are there any stable elements that don't really have any practical uses? Posted: 07 Jan 2018 05:17 PM PST |
| Posted: 07 Jan 2018 07:18 PM PST I know they use it to learn all sorts of stuff about stars, but how do they collect and interpret the data? [link] [comments]  |
| How much energy is freed when a element decays? Posted: 07 Jan 2018 11:27 PM PST |
| Would there be many practical uses for large amounts of Iron 60? Posted: 08 Jan 2018 01:39 AM PST Being that our solar system is relatively lean on the stuff I can't find much information about it, other than it has a half-life of a few million years (and even that number was recently revised) and has a very large beta decay energy. Being that it's unstable it seems dangerous, but are there practical applications for a material like this that other materials can't do as effectively? [link] [comments]  |
| Posted: 07 Jan 2018 07:20 PM PST I've been thinking about a sci-fi story where aliens are attacking from a nearby star. Could we fry them before they reach here? [link] [comments]  |
| How does frozen coastline affect tides? Posted: 07 Jan 2018 08:05 PM PST I saw the video of Cape Cod being frozen, and it got to wondering what happens to the tides when that happens? Do they stop? Does it change anything? Does the whole ice pack shift? [link] [comments]  |
| Posted: 08 Jan 2018 04:42 AM PST |
| Does drinking a lot of soda negatively impact cognitive function? Posted: 07 Jan 2018 12:32 PM PST |
| Do electrons exist physically or are they so called "virtual" particles? Posted: 08 Jan 2018 12:55 AM PST I remember watching a video about virtual particles and it mentioned something about electrons. It was late at night and some time qgo so I don't reqlly remember what it said. I'd be glad if someone could answer me if electrons are physically existing particles or virtual particles that appear and disappear in an atoms electron cloud. [link] [comments]  |
| How does freezer burn work exactly? Posted: 07 Jan 2018 01:49 PM PST It's just hard to wrap my head around this idea of things "burning" in the freezer/extreme cold weather. I know it doesn't burn burn, so how does it work and what does it do exactly? [link] [comments]  |
| Is it possible to determine a neutrinos original flavour via rest mass? Posted: 08 Jan 2018 12:01 AM PST Neutrinos come in different flavours depending on their source. Since neutrinos oscillate between flavours unless the source is nearby a detector receives a mix of all three flavours. However the reason neutrinos oscillate is because they have mass and there are different possible masses for neutrinos and this gives rise to neutrino oscillation through some bizarre quantum mechanical weirdness that I don't pretend to have the slightest understanding of. My question is whether or not it's possible in principle if not necessarily in practice for a detector to measure the rest mass of a neutrino and use that to determine whether it started life as a tau, muon, or electron neutrino. [link] [comments]  |
| What is the benefit to making new elements in labs? Posted: 07 Jan 2018 01:10 PM PST Pretty much just the title. If these elements are not found in nature and are too difficult to create to have any practical use then why bother discovering them? Is it simply for the furthering of knowledge or is there another reason? [link] [comments]  |
| Posted: 07 Jan 2018 01:54 PM PST |
| Can different species of animals communicate between each other? Posted: 07 Jan 2018 10:28 AM PST I was wondering if different species of dolphins, per say, could interpret each others calls, since most of these calls sound very similar to me. [link] [comments]  |
| Posted: 08 Jan 2018 02:31 AM PST This large jump over the course of only 100 years seemed very odd and I just assumed it was due to the improvements regarding rearkng environment, use of modern antibiotics, generally better conditions for the hens etc. But after modelling this I found that there must be some other effect working here than the afore mentioned which very strongly influences the observed trend. This process can't be of evolutionary nature as 100 years seem much too short for an entire evolutionary process to take place. Any ideas why todays chickens lay 3x the eggs they used to? [link] [comments]  |
| How does the uncertainty principle work with multiple observers? Posted: 07 Jan 2018 11:20 AM PST Okay maybe my google search skills are just bad, because I couldn't find anything answering what my question was. I don't quite understand what it is about the uncertainty principle that makes it so absolute. Couldn't you have multiple observing tools tell the direction, position, and velocity of a particle separately? I'm not saying I think I found a way around it, because I'm (obviously) not a scientist and basically that's the first thing someone would try. So in short, why is that? Or am I missing something entirely? [link] [comments]  |
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