Why do clothes feel crunchy when you air dry them, but soft out of the dryer? |
- Why do clothes feel crunchy when you air dry them, but soft out of the dryer?
- Do animals like music? Or at the least, can they recognise the patterns, melodies etc. and react to them?
- Why do some people outgrow allergies and some people develop them later in life? And why do some people never outgrow them?
- Did the construction of the Panama and Suez canals affect the ecology of the surrounding waters?
- In light of recent events in North Korea, how do you set off a nuclear bomb underground without causing substantial damage above the blast site?
- During a supernova, what amount of the star's matter is converted into energy?
- Can a star have more than one fusion core?
- How are parrots able to repeat and talk?
- How does the Rfly drone based RFID system developed at MIT work?
- Is the Planck length constant or does it change as the universe expands?
- Does a satellite experience centrifugal force or centripetal force?
- Does the quantity or quality of melanin in our skin change as we age?
- Is there radiation associated with the creation of a charged particle?
- How does speakers make multiple frequency at once?
- Why is a kettle so much more efficient than a saucepan at boiling water?
- Can someone explain the comparative strength of household magnets?
- What determines the boiling and freezing points of a substance?
- Is there a difference in sound quality when I use the volume control wheel (a variable resistor, I assume) on my headphones as opposed to changing the volume through software?
- Need help Understanding JFET's, Specifically how the depletion region is controlled and its relationship to drain current?
- Why do some things burn and some things melt?
| Why do clothes feel crunchy when you air dry them, but soft out of the dryer? Posted: 02 Sep 2017 04:57 PM PDT |
| Posted: 02 Sep 2017 03:03 PM PDT |
| Posted: 02 Sep 2017 05:11 PM PDT Is there any way to determine the likelihood of whether someone will or won't outgrow their allergies? I feel like I can never find a solid answer to any of these questions. [link] [comments]  |
| Did the construction of the Panama and Suez canals affect the ecology of the surrounding waters? Posted: 02 Sep 2017 03:44 PM PDT Despite the small overland distance, would connecting two very different bodies of water have a noticeable effect on the flora and fauna of the two regions? [link] [comments]  |
| Posted: 03 Sep 2017 12:06 AM PDT Reports saying that this was a hydrogen bomb and 10 times more powerful than anything ever previously tested and 5 times more powerful than the Nagasaki bomb which killed 70000 people almost instantly. How is there not like, y'know, a massive crater in the ground where it was or something? [link] [comments]  |
| During a supernova, what amount of the star's matter is converted into energy? Posted: 02 Sep 2017 10:56 PM PDT It looks like during the lifetime of the sun, .034% of it's mass will be converted into energy via E=MC2. But what about a supernova? Perhaps we can use an A1 type as an example. [link] [comments]  |
| Can a star have more than one fusion core? Posted: 02 Sep 2017 04:40 PM PDT Other than supernova, could for example a blue supergiant/hypergiant have hotspots not in the center that cause fusion? [link] [comments]  |
| How are parrots able to repeat and talk? Posted: 02 Sep 2017 08:20 PM PDT How are parrots able to memorize and repeat certain noises and words so well? [link] [comments]  |
| How does the Rfly drone based RFID system developed at MIT work? Posted: 03 Sep 2017 05:57 AM PDT The text in the article says: The drones don't actually carry the RFID reader with them — Adib explains that this added weight basically caused the drone to crash — but rather, relays the signals emitted by the reader over larger distances. "You can take a single reader, whose range is limited to a few centimeters, and send the signal over exponentially larger distances." So does this mean that the drones are just repeater/amplifiers? Does the reader have that much more bulk? What if two drones transmit the same reader signal and send back the RFID codes at the same time, are there multiple readers waiting for the signal? Do different drones operate on different frequencies? [link] [comments]  |
| Is the Planck length constant or does it change as the universe expands? Posted: 02 Sep 2017 02:31 PM PDT Also, is space time pixelated by this length, or could you have overlapping of said pixels or lengths, where space-time is actually continuous? Edit: The title should read "....could it possibly change..." as it might be theoretical. [link] [comments]  |
| Does a satellite experience centrifugal force or centripetal force? Posted: 02 Sep 2017 06:17 PM PDT |
| Does the quantity or quality of melanin in our skin change as we age? Posted: 02 Sep 2017 05:17 PM PDT |
| Is there radiation associated with the creation of a charged particle? Posted: 02 Sep 2017 06:20 PM PDT I was studying for E&M and I noticed that radiation fields seem to be accompanied by a changing current somewhere. I then tried to figure out how to get radiation without a current this is the best I got. I know the question is kind of nonphysical since you can't just create a lone electron for example but supposing you could, does that release radiation? I'm assuming there's some delta function like object but I'm not sure. I recognize that this is kind of a silly question but I wanted to procrastinate and nobody else is in the office with me. [link] [comments]  |
| How does speakers make multiple frequency at once? Posted: 02 Sep 2017 05:01 PM PDT So I understand that a speaker oscillates to a specific frequency but how is possible for it to make a mixtures of highs and lows at once [link] [comments]  |
| Why is a kettle so much more efficient than a saucepan at boiling water? Posted: 02 Sep 2017 10:59 AM PDT |
| Can someone explain the comparative strength of household magnets? Posted: 02 Sep 2017 06:18 PM PDT I'm interested in making household (i.e., refrigerator) magnets as a craft project by gluing some gewgaw to a plain, ordinary magnet. The plasticky "magnet tape" is notoriously weak, and the hard black ones are too big, so I ended up with some neodymium magnets from the hardware store. After some reading, I am worried that these are too strong and may be difficult to remove from a refrigerator without tearing off the gewgaw. Internet research is just getting me a lot of industrial supply company FAQs and Wikipedia articles with tesla measurements. I don't even know what a tesla is a function of: mass of the magnet? area of the pole? something more esoteric? I would appreciate a quick-n-dirty guide comparing household magnet types in some sort of strength-for-size way. Thank you! [link] [comments]  |
| What determines the boiling and freezing points of a substance? Posted: 02 Sep 2017 03:51 PM PDT |
| Posted: 02 Sep 2017 11:19 AM PDT I understand that it would not necessarily be a noticeable difference; however, is one method of volume control superior in any way? Is it better leave the software volume at its maximum and lower the headphone control as needed, or vice-versa? [link] [comments]  |
| Posted: 02 Sep 2017 01:58 PM PDT So we just started studying FET's in my Electronics circuits and device theory class, I have a basic understanding of how N-channel JFET's work. I am having trouble wrapping my head around how the depletion region is affected by VDS/Drain current when VGS is set to 0V. I think the larger the drain current(ID) becomes the more free electrons are "pulled"(not sure if correct term) from the N-type making the depletion region have more positive ions. I am trying to understand what is physically happening in the depletion region when VGS=0 and ID increases. I also want to understand the other side, Where ID is a function of VGS, How does applying a larger negative voltage make the depletion region larger and how does that effect the resistance of the N-channel. What is the difference between the depletion region when VGS=0 and ID is at saturation compared with VGS= Some negative value and ID = some lower saturation current. What physically happens to the charges in the depletion region? I can clarify if what I'm asking is unclear. [link] [comments]  |
| Why do some things burn and some things melt? Posted: 02 Sep 2017 11:05 AM PDT |
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