How do we know the Mariana Trench is the deepest point in the ocean? |
- How do we know the Mariana Trench is the deepest point in the ocean?
- Many supermassive Black Holes emit relativistic jets. Would a White Hole be expected to have similar in-falling jets?
- Could solar sails be used on a satellite to constantly accelerate it so that it would be able to travel to a nearby star much faster than would normally be possible?
- Why does freezing kill most complex organisms, yet smaller organisms, like bacteria, will just go "dormant" and come alive again once thawed?
- Why do berries in the same bunch ripen at different rates?
- High heat or radiation can change the color of quartz varieties, can the same hold true in glasses?
- Are there "planes" in the ocean? Like a desert, but in the ocean, so flat expanses of ocean floor where little to no life dares to dwell or live?
- What makes our bodies stay at 98.6 degrees?
- How high is Mars' Olympus Mons really? What's the reference point?
- What causes super flat objects to bond and what are the limitations of it?
- Can a sensory neuron connect directly to a motor neuron (without a relay neuron in between)? If so, in what situations would it not be needed?
- Is there a way to slow down sodium acetate crystallization ? How to start reaction remotely?
| How do we know the Mariana Trench is the deepest point in the ocean? Posted: 05 Jul 2019 06:05 PM PDT Pretty sure they taught this in school but can't seem to remember. If we haven't even explored the world's oceans in its entirety, how can we be sure that it's the lowest point? My uneducated guess about measuring the height of a mountain would be something to do with calculating the pressure and temperature (and density of air?) was modified to measure depths. [link] [comments]  |
| Posted: 05 Jul 2019 06:11 PM PDT |
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| Why do berries in the same bunch ripen at different rates? Posted: 05 Jul 2019 05:17 PM PDT |
| High heat or radiation can change the color of quartz varieties, can the same hold true in glasses? Posted: 05 Jul 2019 07:22 PM PDT I don't know alot about the physics of glass color, but as I understand it, heat and or radiation modify the color of crystalline quartz by impacting how impurities (generally metallic cations) are arranged in the silicon dioxide lattice (through changes in coordination number, etc). Glass is not crystalline, but often derives its color from similar impurities. When treated with high heat or radiation, would the color of common types of glass also change? Additionally, if there are types of glass that would react, would they "streak" when near strong particle emitters of radiation? Thank you [link] [comments]  |
| Posted: 05 Jul 2019 10:11 AM PDT |
| What makes our bodies stay at 98.6 degrees? Posted: 05 Jul 2019 05:34 PM PDT I may be asking a dumb question but, if we are constantly in air conditioned environments, at or around 74 degrees, why are we still at 98.6? I get like warm blood but what inside the body keeps us warm? Is blood just inherently warm or what. [link] [comments]  |
| How high is Mars' Olympus Mons really? What's the reference point? Posted: 05 Jul 2019 10:39 AM PDT We usually measure mountains' heights on Earth relative to sea level, with Mt Everest reaching about 8848 m (I heard it's recently grown to ~ 8849 m). But what's the frame of reference for mountains on dry planets, like Olympus Mons on Mars? It is a sort of absolute prominence relative to the lowest point on that planet, like comparing Mt Everest to the Mariana Trench? Or is it calculated from some other value, and in that case, what would be Mt Everest's height if not measured from sea level? [link] [comments]  |
| What causes super flat objects to bond and what are the limitations of it? Posted: 05 Jul 2019 02:24 PM PDT |
| Posted: 05 Jul 2019 05:51 PM PDT I know that the reflex arch is made of the sensory, relay then motor neuron but I'm not sure if the relay neuron is not needed in some cases. [link] [comments]  |
| Is there a way to slow down sodium acetate crystallization ? How to start reaction remotely? Posted: 05 Jul 2019 03:48 PM PDT Is there a way to slow down the crystallization of sodium acetate? Maybe by adding a different chemical? Is there a way to start this reaction remotely? With electricity directly or with a solenoid? (with the solution in a sealed container) [link] [comments]  |
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