If Tesla was on the path of making electricity be conducted through air, like WiFi, how come we can't do it now since technology advanced so much? |
- If Tesla was on the path of making electricity be conducted through air, like WiFi, how come we can't do it now since technology advanced so much?
- How do cancer vaccines work?
- Other than influenza cases dramatically decreasing due to lockdown, increased sanitization, mask wearing, and social distancing during the COVID-19 pandemic, have we recorded other dramatic decreases in other diseases such as measles, mono, strep, staph, etc?
- If you shoot two electrons at each other in a particle accelerator; do they smash into each other like particles, interfere with each other like waves, or do both simultaneously?
- In the vacuum of space, would I be able to turn around?
- Why is the electric field perpendicular to the magnetic field in EM wave?
- Is there some fundamental reason why there are three generations of quarks and leptons, instead of (say) 2 or 4 or 13 or an unlimited number?
- Do people from regions with small amount of trees have worse eyesight or see differently?
- Are there narcoleptic birds?
- How do phone cameras focus, if there aren't any moving parts?
- How does blood go up your leg when you're sitting and not moving your leg?
- What is spectral power and how is it different from spectral density?
- does gravity affect derivatives other than speed or is acceleration constant?
- Does stress make you more alert?
- Is it possible (or likely, moreover) that there are deep see creatures out there that have individual lifespans of hundreds or even thousands of years?
| Posted: 22 Jun 2021 02:13 AM PDT Edit: how about shorter distances, not radio-like? Let's say exactly like WiFi, in order for me to charge my phone even when I'm 5 meters away from the charger? Right now "wireless" charging is even more restraining than cable charging. [link] [comments]  |
| Posted: 22 Jun 2021 02:56 AM PDT I've recently read about BioNTech developing a cancer vaccine with the same mRNA tech used to develop the COVID vaccine. I always thought vaccines were for transmissible diseases such as COVID, polio, measles etc, but as I understand it cancer is not transmissible - you can't catch it from someone. So how does a cancer vaccine differ compared to a regular vaccine and how does it work? Edit: thanks for the responses - very helpful! I am blown away that we can do this stuff. Science is bonkers. [link] [comments]  |
| Posted: 21 Jun 2021 10:26 AM PDT |
| Posted: 22 Jun 2021 05:54 AM PDT |
| In the vacuum of space, would I be able to turn around? Posted: 22 Jun 2021 08:20 AM PDT Say a human is in the vacuum of space and is somehow alive and all is good. They're stationary and just floating there. If that person is facing a certain direction, would they be able to move to face another direction? Like twist their body to face behind them? [link] [comments]  |
| Why is the electric field perpendicular to the magnetic field in EM wave? Posted: 22 Jun 2021 06:19 AM PDT It seems a bit unlikely to me that they just happened to be 90 degree to each other by chance [link] [comments]  |
| Posted: 21 Jun 2021 07:03 PM PDT |
| Do people from regions with small amount of trees have worse eyesight or see differently? Posted: 22 Jun 2021 07:02 AM PDT I read that our eyes can distinguish the highest number of shades of green, because our ancestors had to hunt for food in forest, needed to tell which plants are posionous etc. Is it any different for people from regions like deserts? Do they have a different 'main' color? Is their eyesight better/worse? [link] [comments]  |
| Posted: 22 Jun 2021 08:00 AM PDT |
| How do phone cameras focus, if there aren't any moving parts? Posted: 21 Jun 2021 07:39 PM PDT |
| How does blood go up your leg when you're sitting and not moving your leg? Posted: 22 Jun 2021 06:19 AM PDT All the articles that I came across mention the fact that the muscles in your leg pumps the blood back up. But what if you're just sitting and not moving? [link] [comments]  |
| What is spectral power and how is it different from spectral density? Posted: 21 Jun 2021 10:38 AM PDT I am reading a paper about an experiment using a set of six cylindrical magnets on three rotating axis to generate a magnetic field. It states "The primary frequencies associated with the field regardless of orthogonal location are 45 Hz, 88 Hz, and 93 Hz" and then provides a graph with the y-axis as spectral power and the x-axis as frequency. In the description of the graph, it then says "Z-scored spectral densities of the 'Resonator'. Although the intensity was different, this spectral pattern was generated regardless of orthogonal location of the recording. The first peak was measured at 45 Hz, with the following two secondary peaks at 88 Hz and 93 Hz, respectively". Can anyone help me interpret what any of this means? Thank you! [link] [comments]  |
| does gravity affect derivatives other than speed or is acceleration constant? Posted: 21 Jun 2021 02:44 PM PDT General physics classes taught me the distance equation is 2nd-order, and that, from the surface of the Earth at least, an object speeds up when falling (then again, it turns out the momentum equation is only valid for small speeds nowhere near the speed of light). I always wondered if gravity was actually exponential or no because while the acceleration on the surface is 9.8m/s², from the ISS it's 8.7m/s². Basically, if I dropped a ball from that height, we're told it would have that acceleration the entire trip down. Why does speed get affected by not acceleration and other derivatives? [link] [comments]  |
| Does stress make you more alert? Posted: 21 Jun 2021 07:09 AM PDT Hey everyone, so I've been going through a bit of emotional stress recently, so my sleep quality isn't exactly top notch. However, I was wondering, not only does stress decrease your sleep quality, does it actually make you even more alert, making it even harder to sleep? What I mean is, last night around 2AM, I woke up to go to the bathroom, and when I went back to bed, I find myself feeling awake and not as sleepy. (You know, I start overthinking) But after lying in bed for awhile I start drifting off, and because I am staying at a hotel right now, the only thing that's separating my headboard from my neighbor's is a thin wall. So I am head to head with him. And because of this, I can hear him move around in bed and all those little noises. Now he's a very quiet person, and I haven't been woken up by him at all. But last night, I swear EVERY time that he made ANY sort of little noise, it would not only wake me up, but it would startle me and jump scare me. These little noises never woke me up at all before. But last night it got to a point where I decided to give up on sleeping because I got so startled by every move he made that I would instantly wake up every time he moved around. And also I got tired of having jump scares. So I'm wondering, is this normal? Does stress make your body go into "high alert" mode, and making you more sensitive to any little noise that's around you? If so, is there any tips that can help me stay asleep? Has anyone experienced this before? This really sucks. Thank you everyone! [link] [comments]  |
| Posted: 21 Jun 2021 10:03 AM PDT Editing to add: thanks for all the responses so far, I've learned a lot from y'all already. The immortal jellyfish are fascinating. I had recently read about the Greenland Shark and some really old tortoises, which is what drove me to ask this question. I guess I'm most curious about what lies deep in the ocean, perhaps beyond our current reach and understanding. Might there be other life similar to the immortal jellyfish? Might they regenerate similarly or far differently? [link] [comments]  |
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