Why are car antennas so small now, when 10 years ago they were 2-3 feet tall? |
- Why are car antennas so small now, when 10 years ago they were 2-3 feet tall?
- What happens to your muscle when you sprain it?
- Why do slugs/snails dislike plants such as California Poppies?
- When someone dies of exposure, what exactly kills them? Do other animals die from exposure?
- What are the advantages/disadvantages to using LN instead of co2 in supercritical extractions?
- Are ergodic processes always stationary?
- Besides the radioactive element, are superheavy elements just like normal elements?
- [Physics] Do light particles ever bounce off of each other?
- I bought pollen free sunflowers seeds by accident. But how did the seller create these seeds in the first place?
- The 'Oh My God Particle' was estimated to have a kinetic energy of about 48 Joules. What would it feel like to be hit by this atomic nuclei?
- How were mathematical models fit from experimental data before computers?
- Since things like neutron stars and black holes can bend light, can light orbit around them? What would we see if we looked at the orbiting light?
- Do portable magnet detectors exist?
- How did people isolate charge(s) to study it before they knew what it was/that it was discrete?
- How do processors (Qualcom) have an effect on charging speeds? (Quickcharge)
- Could dropping a hairdryer in a bathtub really kill a person?
- Why do handheld glass magnifiers get smaller as the strength of the magnification increases?
- What is the speed of quantum tunneling?
- How did stone-aged people fell trees?
- How does sublimation work on a molecular level? Is there really no period of time between solid and gas or is the transition instant?
- What makes water so significant for searching for potential life?
| Why are car antennas so small now, when 10 years ago they were 2-3 feet tall? Posted: 28 Apr 2017 07:05 PM PDT |
| What happens to your muscle when you sprain it? Posted: 28 Apr 2017 06:49 PM PDT |
| Why do slugs/snails dislike plants such as California Poppies? Posted: 28 Apr 2017 01:10 PM PDT From my own gardening experience, I know that slugs and snail don't like California poppies (and some gardening sites say the same) along with some other plants, but was wondering what is it that they dislike? Do they the plants contain a chemical that the slugs/snails don't like? [link] [comments]  |
| When someone dies of exposure, what exactly kills them? Do other animals die from exposure? Posted: 28 Apr 2017 06:12 PM PDT |
| What are the advantages/disadvantages to using LN instead of co2 in supercritical extractions? Posted: 28 Apr 2017 02:17 PM PDT What is the difference in their extraction profile? [link] [comments]  |
| Are ergodic processes always stationary? Posted: 29 Apr 2017 02:57 AM PDT If a process is ergodic does that necessarily entail that it cannot change over time? Asking in relation to Friston's Free Energy framework that assumes living systems are ergodic, but a question has been raised that ergodic processes are necessarily stationary, and living systems are not stationary, so they cannot be ergodic. However I have read about specifically 'stationary ergodic processes', which implies that not all ergodic processes are stationary. Any clarification greatly appreciated. Thank you. [link] [comments]  |
| Besides the radioactive element, are superheavy elements just like normal elements? Posted: 29 Apr 2017 06:30 AM PDT |
| [Physics] Do light particles ever bounce off of each other? Posted: 28 Apr 2017 02:10 PM PDT |
| Posted: 28 Apr 2017 02:30 PM PDT My Google fu has failed me! Quote from a seller of pollen-free sunflowers: " We actually develop all of the sunflower varieties that we sell by conventional plant breeding. No genetic engineering, no GMO. It's a long process that takes at least 7 years from start to finish before we can produce the seeds." Okay, cool. "The fact that our varieties are pollen free means that they cannot pollinate themselves and therefore will not breed true from any seeds that you might find in heads after flowering." So how can they get pure-bred sunflower seeds when the breed cannot create pollen, thus cannot be fertile, thus cannot create seeds? Even if it was GMO, how do you get the engineered plant, how do you get that one to produce fertile, non-hybrid seeds? [link] [comments]  |
| Posted: 28 Apr 2017 09:42 AM PDT Here is the link to to the PBS Spacetime video on youtube explaining the 'Oh My God Particle' and other cosmic rays: The Oh My God Particle Quoted energy is at about 1 minute.
In the video he equates it to a "good size stone thrown at your head at 50 miles per hour." I assume the particle would pass through me 99.9% of the time unobstructed. But if my body were to stop it, would I even feel it? What would it feel like? Could it damage internal organs?
Thanks for any insight! [link] [comments]  |
| How were mathematical models fit from experimental data before computers? Posted: 28 Apr 2017 09:52 AM PDT In other words, how was curve fitting performed? Particularly for more complicated models. [link] [comments]  |
| Posted: 28 Apr 2017 12:29 PM PDT |
| Do portable magnet detectors exist? Posted: 28 Apr 2017 09:58 PM PDT I'm looking for an instrument that could help me detect when I'm within 1-2 meters (6 ft) of a small neodymium magnet while being outside in the city, and could perhaps even help me pinpoint its location. Sorry if this goes against the rules, but I'm having one hell of a time finding an answer to this. [link] [comments]  |
| How did people isolate charge(s) to study it before they knew what it was/that it was discrete? Posted: 28 Apr 2017 08:43 PM PDT |
| How do processors (Qualcom) have an effect on charging speeds? (Quickcharge) Posted: 28 Apr 2017 03:32 PM PDT I cannot wrap my head around this. How does a processor dictate how fast a charger can charge? For example, Quickcharge 4.0 needs a Snapdragon 835 processor or higher. From a novice Computer Engineer standpoint, I can understand circuits and battery dictating charge speed but not the processor. [link] [comments]  |
| Could dropping a hairdryer in a bathtub really kill a person? Posted: 28 Apr 2017 11:33 PM PDT From a non gfci source of course. Wouldn't the rush of current cause the overcurrent protection to trip regardless? In a larger volume of water would more of the current dissipate? [link] [comments]  |
| Why do handheld glass magnifiers get smaller as the strength of the magnification increases? Posted: 28 Apr 2017 11:32 PM PDT I work with seniors and individuals with low vision. We show them various types of magnifiers and how to use them to be independent. I have the hardest time explaining to them that getting a larger strength handheld glass magnifier means that the circumference will be smaller not larger. I would like to understand this better so I am clear and correct when explaining to others. I say handheld glass to differentiate between a glass magnifier set in plastic and video magnifiers that can magnify multiple times using video imaging. [link] [comments]  |
| What is the speed of quantum tunneling? Posted: 28 Apr 2017 12:15 PM PDT as in how many times faster then the speed of light would it be [link] [comments]  |
| How did stone-aged people fell trees? Posted: 28 Apr 2017 10:36 AM PDT I've seen videos of stone tools felling smaller trees and shrubs, how did people without access to metal tools chop down something like a large oak tree? Was it ever even done? [link] [comments]  |
| Posted: 28 Apr 2017 11:40 AM PDT I'm thinking is terms of planck time or quantum time. [link] [comments]  |
| What makes water so significant for searching for potential life? Posted: 28 Apr 2017 09:32 AM PDT I've been watching a lot of videos on YouTube about the Drake equation, potentially habitable planets, planets with potential life, etc. and I got to wondering why is water so significant to a planet potentially having life? Is it just because of our observations of biological life on earth? Is it not plausible that there could be life forms that can live off of other elements or gasses like CO2? I'm not super familiar with this kind of science, as I am a software engineer, so I apologize if this question is redundant. [link] [comments]  |
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