Can we accelerate in space with the power of a flashlight and if yes - how fast? |
- Can we accelerate in space with the power of a flashlight and if yes - how fast?
- How do we know how to pronounce ancient Egyptian and Sumerian names?
- What’s in the Y axis of space?
- Would it be possible to see the CMBR in the visible spectrum if....?
- How physically similar is one individual Coronavirus to another one?
- Why are most vaccines done via injection?
- Would collecting and combining the digital data from 2,500, half inch optical telescopes result in imagery comparable to one, 50 inch telescope?
- Why do most hand sanitizers have 70% ethyl alcohol?
- How does salt form and how different is the salt obtained from mountains to the one harvested from sea water?
- International Space Station Query: How do they get internet connectivity?
- Why does still water breed more bacteria than flowing water?
- Is sea level rise matching rates of glacial melt?
- Does the quality of genetic information carried by a sperm cell affect it’s motility? Is there any benefit to having competition between sperm cells?
- How do electron and positron annihilate each other?
- Are most loci on chromosomes only 2 alleles? (Dominant, recessive)
- How do scientists discover new complex molecules?
- How are the cells in a fern gametophyte able to reproduce and grow with only one set of chromosomes?
- Can a single strand of mRNA be reused in transcription more than once?
- Criteria for Covid Discharge?
| Can we accelerate in space with the power of a flashlight and if yes - how fast? Posted: 23 Aug 2020 11:11 PM PDT |
| How do we know how to pronounce ancient Egyptian and Sumerian names? Posted: 23 Aug 2020 07:03 PM PDT |
| What’s in the Y axis of space? Posted: 24 Aug 2020 05:11 AM PDT Every time we think of space travel or when it's shown on screen, it's depicted as horizontal movement. Even the model of our galaxy is planar. Given that the universe is infinite in all directions, what's above and below the earth? What would happen if we just flew up and kept on flying vertically? Thank you for your answers in advance! [link] [comments]  |
| Would it be possible to see the CMBR in the visible spectrum if....? Posted: 24 Aug 2020 03:55 AM PDT So I don't have any formal physics education, I could be entirely off base here in which case someone please correct me but I have a question relating to special relativity and I figured this would be the best place to get a timely answer. Special relativity states that because c must be constant for all observers, the closer massive particles accelerate to the speed of light, the slower they experience time relative to particles not experiencing that acceleration. So does this mean that if we were on a spaceship that could accelerate at g forever, and we had a visible light telescope that could exclude all radiation except for the CMBR, we would eventually be able to see the CMBR?? The light would just continue to blueshift the higher γ rose right? So would the CMBR eventually come up from the radio spectrum into the visible spectrum? Furthermore, because of the time dilation would it be possible to watch the entire future of Earth play out? Stipulating this time we had some sort of gamma ray telescope that could exclude all radiation except for that coming from our selected source. [link] [comments]  |
| How physically similar is one individual Coronavirus to another one? Posted: 24 Aug 2020 02:26 AM PDT My dauther asked me how many spikes a Coronavirus has. I have not yet found an answer online. While thinking about it, I came to the broader question of how physical similar one single Coronavirus is to another one.
If there are variations in size…
[link] [comments]  |
| Why are most vaccines done via injection? Posted: 23 Aug 2020 03:11 PM PDT What makes an injection, specifically a vaccine, work better than being taken orally or via nasal passages with a spray? I realize this may seem like a very basic question, but my 7-year old daughter asked why the COVID-19 vaccine will be done via injection, and Google is not helpful on this one. So, I defer to you science wizards! [link] [comments]  |
| Posted: 24 Aug 2020 01:11 AM PDT Also, would there be a significant reduction in resolution if data collected at the same time were from different places? For example 1,250 people in New England taking an hour long expose of Saturn from 0200 to 0300 and 1,250 people in the Pacific North West doing the same thing from 2300 to 2400. I'm wondering is crowd sourcing data from amateur astronomers to produce high resolution images could ever be a thing. Thank you! [link] [comments]  |
| Why do most hand sanitizers have 70% ethyl alcohol? Posted: 23 Aug 2020 03:50 PM PDT Why can't it be 80% or any other number? What is the other 30%? [link] [comments]  |
| Posted: 23 Aug 2020 07:49 PM PDT |
| International Space Station Query: How do they get internet connectivity? Posted: 23 Aug 2020 08:27 PM PDT This might be a long shot, but does anyone know how the International Space station gets internet connectivity even though its out there moving fast and presumably pointing away from satellites that beam signals? [link] [comments]  |
| Why does still water breed more bacteria than flowing water? Posted: 23 Aug 2020 09:52 AM PDT Also if still water is exposed to only air in a setting where nothing else can get in, will it still get bacteria? [link] [comments]  |
| Is sea level rise matching rates of glacial melt? Posted: 23 Aug 2020 09:25 AM PDT Recent news articles have been talking about the upward estimates of ice loss attributed to global warming. Without getting into the complexities of glacial melts and retreats, the question is whether or not the coinciding rate of sea level rise is consistent with model predictions? Perhaps the answer is that the recent news is not truly news to those in the field of study, but the corollary between ice melt and sea level rise remains. [link] [comments]  |
| Posted: 23 Aug 2020 04:36 AM PDT |
| How do electron and positron annihilate each other? Posted: 23 Aug 2020 07:00 AM PDT For instance, they are of opposite charges (as a proton and electron in a hydrogen atom), it sounds plausible that they capture each others and form a stable positronium atom. From my understanding, they are both considered point particles with zero-length radii. What is the probability of two zero-lengthed points to touch? [link] [comments]  |
| Are most loci on chromosomes only 2 alleles? (Dominant, recessive) Posted: 23 Aug 2020 08:01 AM PDT I know there's variations on the dominant or recessive options like codominance or incomplete dominance, but is that consistent with the majority or all genes? Do some genes have 3 or more alleles? If so, how often does that occur in nature? [link] [comments]  |
| How do scientists discover new complex molecules? Posted: 23 Aug 2020 01:52 AM PDT From my understanding you would for example take a plant and with a first spectroscopy you would get different lines for e.g. the mass of all the molecules you have. Then, when there is a peak that you cannot match to a known molecule you would try to isolate this substance. Then maybe you could use some kind of spectroscopy to find out which atoms are in this molecule. Would you then try to come up with a formula that makes sense or what would you do? How can we find out about cis and trans molecules? Or if the carbon builds rings or not? [link] [comments]  |
| How are the cells in a fern gametophyte able to reproduce and grow with only one set of chromosomes? Posted: 23 Aug 2020 06:40 AM PDT |
| Can a single strand of mRNA be reused in transcription more than once? Posted: 22 Aug 2020 10:55 PM PDT When the ribosome reaches the the end of the mRNA can it be reused to create the same protein and if so what dictates when it stops being transcribed? [link] [comments]  |
| Posted: 23 Aug 2020 03:56 AM PDT What is correct criteria for discharge of Covid patients? Is it 2 -ve rtpcr tests or is it just no showing of symptoms after few(like 10) days? Which one is better? & provides credible data? [link] [comments]  |
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