What is the purpose of utilizing screws with a Phillips' head, flathead, Allen, hex, and so on rather than simply having one widespread screw compose? |
- What is the purpose of utilizing screws with a Phillips' head, flathead, Allen, hex, and so on rather than simply having one widespread screw compose?
- How do lava lamps work?
- When you destroy a bee or wasp nest, where do the survivors go for the night?
- Can plants/trees die of smoke inhalation?
- The Apollo missions resulted in us leaving optical reflectors on the moon's surface. Do we need to 'lead' the moon when measuring distances via laser using the reflectors?
- How do CDs encode stereo sound and how does it affect the bit depth of the sample? Also, how do CDs and/or Blu-Ray discs account for thermal expansion?
- Do different kinds of languages have different sounding gibberish's?
- How does a deadly allergy work?
- Can people die from a highly oxygenated environment?
- Why do bombs have to be handled so gently? What mechanism makes them go off if handled roughly?
- Why does eczema show up in different places on different people?
- Can antennas transmit electromagnetic radiation in the visible spectrum?
- How do internet service providers harness the internet and distribute access to it via cables? What do the cables in our homes connect to on the other side?
- What gives our eyes their color?
- Some thunder is deep and rumbling, and some sounds hollow and piercing. What causes the variation in how thunder sounds?
- How can scientists determine that Homo Denisovan is a separate species when The biggest fossil is a finger bone?
- Why are there so many wildfires in California?
- Do any other animals "combine" foods like humans do?
- Are there any algebraic structures defined by ternary operations?
- For LASERs, does it matter which orientation you apply the electrical potential across the piece of semiconductor material?
- How does the smoke, heat and debris from wildfires affect cloud and weather systems?
- What role do neoplastic cells play in vaccines?
| Posted: 01 Aug 2018 04:37 AM PDT |
| Posted: 31 Jul 2018 01:01 PM PDT |
| When you destroy a bee or wasp nest, where do the survivors go for the night? Posted: 31 Jul 2018 07:06 PM PDT |
| Can plants/trees die of smoke inhalation? Posted: 31 Jul 2018 10:24 AM PDT I was flying over the CA/OR wildfires yesterday and had a thought. I know plants (in general) 'breath' through stomata in green leaves. If they are in a very dense smoke environment, would their respiratory systems become blocked like a human's would in a smokey environment? If so, how dense would that smoke need to be? How long would the exposure need to happen over? [link] [comments]  |
| Posted: 31 Jul 2018 01:10 PM PDT See Smarter Every Day's snippet on the subject. They talk about having very high precision retro-reflectors at 3 locations on the moon's surface. They also mentioned that it was roughly 1.28 light seconds to the moon. Does that mean that when we send a laser burst to test distance, that we need to actively 'lead the target' reflector? Since lasers aren't perfect, are they simply 'wide' enough at that distance that it is a non-issue? [link] [comments]  |
| Posted: 01 Aug 2018 06:14 AM PDT I have surprisingly been unable to find exactly how a CD records and plays back stereo sound. I know that in CDs sound is encoded as a sample taken 44100 times per second with 16-bits of precision, but for almost all media there are two tracks, not one. One for the left channel and one for the right channel. But how does the system know if the sound is meant for the right or left channel? Given that in analog mediums these are generally two tracks read simultaneously, and that a CD is a single line of bits, how is it able to send sound to both channels simultaneously? Does it alternate reading right and left channel samples every other sample? does it encode the channel within the sample itself? if so how does that affect the bit depth and sound quality? My second question which I have also been unable to find an answer for is how CDs or Blu-Ray discs deal with thermal expansion. I'm not sure if this is an issue for CDs as they use larger pits for a larger wavelength laser, but given the tiny size of the pits on a Blu-Ray disc I'd imagine that being heated up by the laser would cause the disc to expand to the point that the playback laser is no longer tracking the correct path. How is this accounted for and dealt with? Thank you [link] [comments]  |
| Do different kinds of languages have different sounding gibberish's? Posted: 31 Jul 2018 10:35 AM PDT Gibberish can sound like a lot of things, but to keep this question relavent, I'd define gibberish as nonsensical talk that sounds like it could be a language, or using a consistent phonology perhaps? Does the language you speak influence the gibberish you make up? Could the kind of gibberish you make up clue what language you natively speak? I am a native english speaker and I can't roll my r's so even when I speak gibberish there are sounds I can't make and that can clue my non spanishness. Do different languages have different general sounding gibberish's? [link] [comments]  |
| How does a deadly allergy work? Posted: 01 Aug 2018 06:37 AM PDT For example, I have a friend who is literally deathly allergic to tomatoes. What does his body lack/have? [link] [comments]  |
| Can people die from a highly oxygenated environment? Posted: 31 Jul 2018 10:16 PM PDT |
| Why do bombs have to be handled so gently? What mechanism makes them go off if handled roughly? Posted: 31 Jul 2018 08:07 PM PDT |
| Why does eczema show up in different places on different people? Posted: 31 Jul 2018 08:41 PM PDT So I've had mild-moderate eczema all of my life which affects the insides of my elbows and knees, and the front of my neck. I know a lot of people get it on their hands, and some unlucky people can get it on their eyelids. What is it that determines where you're affected by eczema? [link] [comments]  |
| Can antennas transmit electromagnetic radiation in the visible spectrum? Posted: 31 Jul 2018 11:11 PM PDT As far as I know, dipole and parabolic antennas can transmit in the EM spectrum on either side of the visible spectrum. Why then, have I not seen an antenna transmit in visual light? I'm not talking about filament bulbs that heat an element, it is visually similar but that is fundamentally different from what I am asking (I think). I would expect, if we modulated the signal similar to how we do VHF or microwaves, I would be able to see an antenna appear green, and just by changing the frequency, alter the color. [link] [comments]  |
| Posted: 31 Jul 2018 03:16 PM PDT |
| What gives our eyes their color? Posted: 01 Aug 2018 01:21 AM PDT |
| Posted: 31 Jul 2018 06:37 PM PDT |
| Posted: 31 Jul 2018 06:18 PM PDT It doesn't make sense to claim so much about this specifies with so little evidence. [link] [comments]  |
| Why are there so many wildfires in California? Posted: 31 Jul 2018 06:37 PM PDT |
| Do any other animals "combine" foods like humans do? Posted: 31 Jul 2018 01:20 PM PDT Is there an animal equivalent to say, chocolate covered strawberries (or crackers and cheese, carrots and hummus, pasta and meat, etc)? It's a food/flavor combination that a lot of humans enjoy (although not all), even though both can be eaten separately. Do any other animals or have any other animals been observed to have certain food combination preferences within their diets in the wild or in captivity? If so, which species and which foods do they like? If not, why not? [link] [comments]  |
| Are there any algebraic structures defined by ternary operations? Posted: 31 Jul 2018 03:32 PM PDT There are lots os interesting structures defined by a set and one or more binary operations, like Monoids, Groups and Rings. Can you define any unique and/or interesting algebraic structures using ternary operations? [link] [comments]  |
| Posted: 31 Jul 2018 01:27 PM PDT
[link] [comments]  |
| How does the smoke, heat and debris from wildfires affect cloud and weather systems? Posted: 31 Jul 2018 12:53 PM PDT |
| What role do neoplastic cells play in vaccines? Posted: 31 Jul 2018 10:15 PM PDT |
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