Why are oil stained napkins transparent? |
- Why are oil stained napkins transparent?
- Because of the curvature of the Earth, are nearby skyscrapers closer together at the base than they are at the top?
- Has there been an optimal design for a fan or fan blade created yet? If so, Why isn't it used in every application that requires a fan?
- Would brushing your teeth with Jack or any other high ABV booze actually work at all if you didnt have access to toothpaste or mouthwash?
- When a banana gets bruised, does the nutritional content of the bruised area change?
- Why do insects fly so erratically?
- What would the dicovery of the Graviton mean ?
- Why do objects become harder to break the smaller they get?
- Would it be possible to create the opposite of a microwave: something that rapidly makes a food item or drink colder?
- By what mechanism is a human being able to estimate the passing of time? What happens when this function is disrupted? Can you lose your sense of time passing?
- Dogs pant and humans sweat, so how do cats cope with the heat?
- Why the sound of thunder isnt continuous when we hear it but is somewhat "interrupted"?
- How does color blind glasses work?
- How do pressure cookers work?
- If the universe is always expanding, then what does it look like at the edge of the universe?
- The moon is so big, its gravity effects our tides. Does it also effect the magma inside earth?
- Suppose entire solar systems lit up in the night sky instead of just the stars. How big would these appear in our night sky compared to the dots we see now?
- What is the initial cause for different accents in regions that speak the same language?
- Why did NASA use a skycrane to deliver Curiosity to Mars?
- Does it take longer for a hot object to reach room temperature than a cool object?
- Why does paper break when wet?
- Why do 'fast' neutrons need to be moderated in a uranium reactor, but not in a fission bomb?
| Why are oil stained napkins transparent? Posted: 05 Aug 2017 08:08 PM PDT If you've ever held an oil stained napkin to a light, you can see through it! This isn't the case with wet, water logged napkins. What causes oil stained napkins to be transparent? Is this property exclusive to lipids? [link] [comments]  |
| Posted: 05 Aug 2017 05:47 PM PDT |
| Posted: 05 Aug 2017 08:05 AM PDT Hi, The question originates from seeing various designs for fans in general with varying degrees of air flow per speed and efficiency. I was looking at computer fans, ceiling fans, car radiator fans, windmills, AC fans, and more. I got to thinking that the design with the most air movement would find it's way as the defacto fan blade design standard and would be used in every application. Yet even in some applications as trivial as CPU/GPU coolers in computers we find fans with varying curvatures, angles, and gimmicks. Am I wrong for thinking that the most optimal design would/could/should be used everywhere with the only difference being speed to control the airflow (CFM)? Has it already been made and is it being held up by a patent somewhere? Sorry in advance, This has just been my shower thought for a few weeks and I haven't found any sufficient Google answers for it. [link] [comments]  |
| Posted: 05 Aug 2017 10:16 PM PDT |
| When a banana gets bruised, does the nutritional content of the bruised area change? Posted: 06 Aug 2017 07:47 AM PDT |
| Why do insects fly so erratically? Posted: 05 Aug 2017 07:44 PM PDT I work outside and I can't help but notice how, at random intervals, insects will just come in and bounce off my face. Can't they control their flight a little better than that? [link] [comments]  |
| What would the dicovery of the Graviton mean ? Posted: 05 Aug 2017 05:59 PM PDT When and if the Graviton is ever discovered what would that prove ? and what would be its utility ? [link] [comments]  |
| Why do objects become harder to break the smaller they get? Posted: 05 Aug 2017 11:29 PM PDT |
| Posted: 05 Aug 2017 09:42 PM PDT |
| Posted: 05 Aug 2017 10:57 AM PDT |
| Dogs pant and humans sweat, so how do cats cope with the heat? Posted: 05 Aug 2017 05:43 PM PDT |
| Why the sound of thunder isnt continuous when we hear it but is somewhat "interrupted"? Posted: 06 Aug 2017 07:24 AM PDT |
| How does color blind glasses work? Posted: 06 Aug 2017 07:17 AM PDT |
| Posted: 05 Aug 2017 05:59 PM PDT I get that higher pressure raises the boiling point, but wouldn't that make it even harder to boil something or cook something? How does a high boiling point make cooking FASTER? [link] [comments]  |
| If the universe is always expanding, then what does it look like at the edge of the universe? Posted: 05 Aug 2017 09:38 PM PDT |
| The moon is so big, its gravity effects our tides. Does it also effect the magma inside earth? Posted: 05 Aug 2017 02:56 PM PDT |
| Posted: 05 Aug 2017 07:43 PM PDT |
| What is the initial cause for different accents in regions that speak the same language? Posted: 05 Aug 2017 08:04 PM PDT |
| Why did NASA use a skycrane to deliver Curiosity to Mars? Posted: 05 Aug 2017 04:49 PM PDT How did NASA come to the conclusion that the skycrane was the best way to land a heavy rover on the Martian surface? What were some of the other strategies considered for the EDL (entry descent and landing) of Curiosity and why weren't those used instead? [link] [comments]  |
| Does it take longer for a hot object to reach room temperature than a cool object? Posted: 05 Aug 2017 08:27 PM PDT Assuming that both objects are starting at temperatures that are of equal magnitude from room temperature, which object would reach room temperature fastest and why? [link] [comments]  |
| Why does paper break when wet? Posted: 05 Aug 2017 05:19 PM PDT Upon shopping today and getting caught in torrential rain causing the handle of my paper bag to give up, it begged the question; why does paper getting wet compromise the structural integrity? [link] [comments]  |
| Why do 'fast' neutrons need to be moderated in a uranium reactor, but not in a fission bomb? Posted: 05 Aug 2017 01:37 PM PDT Nuclear reactors use a moderator to slow 'fast' neutrons down to the point where they are likely to be captured by a U235 nucleus. But when you slam two pieces of weapon-grade uranium together, it doesn't require a moderator to make them explode. The high-energy neutrons seem to be absorbed just fine. Why? [link] [comments]  |
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