If diamonds are the hardest material on Earth, why are they possible to break in a hydraulic press? |
- If diamonds are the hardest material on Earth, why are they possible to break in a hydraulic press?
- I understand trigonometry and it's identities but I am having trouble understanding it intuitively. I've read and seen all the unit circle definitions and I grasp that perfectly. It's just that, I'm looking for an explanation that doesn't rely on geometry?
- Is it theoretically possible to freeze photons?
- If I dropped a lamp into a black hole and a photon left the lamp travelling *exactly* away from the singularity, after the lamp had passed the event horizon, would the photon slow down or leave the black hole?
- What would be the toughest material of the diamond-sized object for the hydraulic press to break?
- How are the images on the Voyager probe kept?
- How can a whip wrapping around an object, Indiana Jones-style, be analyzed through kinematics of motion? Are there any equations for this?
- Is it pitch black in between stellar systems?
- NASA posted this picture of a black hole to their Instagram account. Is it real? Fake? Have we observed black holes?
- Is it theoretically possible to write an algorithm that returns a random number without restrictions?
- How is C^13 - O^18 isotope clumping used as a Paleothermometer?
- Why does mesosphere lightning look different to normal lightning?
- Does the maximum size of a droplet from a water-solution increase with the amount of non-water particles in said solution?
- How do I calculate the "heat transfer" function for a tank of gas?
- How can Dark Energy both be gravitationally repulsive and make up 70% of our Universe's mass?
- How does light act as a particle?
- Relationship between band gap and color?
- Why is it that when a sea wave crashes into the beach, the water turns white momentarily?
| If diamonds are the hardest material on Earth, why are they possible to break in a hydraulic press? Posted: 14 May 2016 07:42 AM PDT Hydraulic press channel just posted this video on Youtube https://www.youtube.com/watch?v=69fr5bNiEfc, where he claims to break a diamond with his hydraulic press. I thought that diamonds were unbreakable, is this simply not true? [link] [comments]  |
| Posted: 14 May 2016 07:52 AM PDT |
| Is it theoretically possible to freeze photons? Posted: 14 May 2016 08:28 PM PDT Do elementary particles freeze at absolute zero? Can we [humans] ever go sub absolute zero? [link] [comments]  |
| Posted: 15 May 2016 04:11 AM PDT |
| What would be the toughest material of the diamond-sized object for the hydraulic press to break? Posted: 14 May 2016 12:26 PM PDT |
| How are the images on the Voyager probe kept? Posted: 15 May 2016 12:03 AM PDT I've tried researching how they're kept, but all the sources say they're on the phonograph record. Are the images on film, a metal plate, etc? [link] [comments]  |
| Posted: 14 May 2016 06:47 PM PDT I'm more so asking about the impact force as the whip coils around the object, as there's already lots of info on reddit for after it is wrapped around. [link] [comments]  |
| Is it pitch black in between stellar systems? Posted: 14 May 2016 11:43 AM PDT |
| Posted: 14 May 2016 12:33 PM PDT And also, if it was a computer generated approximation of what a black hole galaxy may look like, wouldn't it be a little bit disingenuous of them to present it like a "picture" - like the real images of space on their profile? [link] [comments]  |
| Posted: 14 May 2016 11:15 AM PDT Without restriction means no pre-specified length, precision, range etc. [link] [comments]  |
| How is C^13 - O^18 isotope clumping used as a Paleothermometer? Posted: 14 May 2016 07:48 AM PDT Just read the article by P. Ghosh et al. but struggling to get my head around the concept, as Chemostratigraphy isn't my forte at University. [link] [comments]  |
| Why does mesosphere lightning look different to normal lightning? Posted: 14 May 2016 11:05 AM PDT Normal lightning is blue and tree-like. Mesosphere lightning looks like terrifying red alien squid. Why do they look so different? [link] [comments]  |
| Posted: 14 May 2016 09:08 AM PDT |
| How do I calculate the "heat transfer" function for a tank of gas? Posted: 14 May 2016 07:14 AM PDT I have some sensors installed on a carbonation system that's installed in a remote location, effectively outside. Specifically, we'd like to be able to estimate the amount of gas remaining and track usage in the tank. The tank in question is what I would call a 280 of CO2: the tank holds about 280 cubic feet at atmospheric pressure, but is a heavy steel tank about 300mm in diameter and about 1.5m tall. You can estimate tank fill by measuring the tank pressure-- at about 1000psi, the tank is full. At 0psi, the tank is empty. All that said, we're seeing dramatic changes in tank pressure based on the air temperature. These changes are completely masking the gas usage. We can still determine when the tank needs to be replaced, but I'd really like to be able to estimate gas usage on a daily or weekly basis. See charts here -- top is pressure in psi, bottom is temperature in C. The temperature sensor is near to the tank. Visually, you can see that the tank pressure generally follows the temperature, but it lags a bit due to the thermal mass of the tank. The gas isn't getting pulled out fast enough for the evaporation/decompression cooling to really affect stuff. Given all that: is there a way to model or estimate the "heat transfer function" of the tank so we can remove the temperature signal from the pressure? Raw data is here if you want to play: https://horat.io/data/pressure.txt https://horat.io/data/temperature.txt [link] [comments]  |
| How can Dark Energy both be gravitationally repulsive and make up 70% of our Universe's mass? Posted: 14 May 2016 12:12 PM PDT Dark Energy makes up 70% of our universes' mass-energy and in all the articles I've read it is described as a field filling space with a (positive) energy density. Anything with positive mass or energy is gravitationally attractive, so how is Dark Energy gravitationally repulsive? Is it an example of negative mass? [link] [comments]  |
| How does light act as a particle? Posted: 14 May 2016 09:49 AM PDT Light is commonly stated to act as a particle and a wave, possessing properties of both. I (think I) understand ways it acts as a wave, as shown in double split experiments, but I can think of no way it acts as a particle. Anything would help. Thanks [link] [comments]  |
| Relationship between band gap and color? Posted: 14 May 2016 11:28 AM PDT What is the relationship between the band gap and color of a material and why does this relationship exist? [link] [comments]  |
| Why is it that when a sea wave crashes into the beach, the water turns white momentarily? Posted: 14 May 2016 08:14 AM PDT When a sea wave crashes into the beach, it forms a lot of foam like substances, and turns white, can anyone explain this? I hypothesise that it has something to do with air being dissolved into the water when the wave crashes, but unable to proceed further. Thanks! [link] [comments]  |
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