How did the planetary cool-down of Mars make it lose its magnetic field? |
- How did the planetary cool-down of Mars make it lose its magnetic field?
- Do earthworms in a small-scale closed vermicompost system (a home worm-box) show physiological or behavioural adaptations to the specific types of waste added to the system?
- What are Planck units (mostly Planck time, but also the others) actually used for?
- Does being exposed to confrontation/danger on a daily basis naturally increase testosterone levels?
- Is the universe quantized or continuous?
- How do doctors determine if a tumor is benign or malignant?
- How long does water spend in the human body?
- Can you tell the date and your location from the stars?
- How are the calories in food calculated?
- Do climate models account for water being removed/added by growth and/or decomposition of total global organic materials? What is the magnitude of this effect compared to other factors affecting sea levels such as the water cycle and global ice loss?
- What is this chemical structure that was spray-painted onto this van?
- Why can't we use the sine relation to pi to find the digits of pi instead of all the diverging series?
- If we had a Coelacanth from 65 million years ago, could it mate with a modern day Coelacanth of the opposite sex?
- Why are rare earth metals good luminescence activators?
| How did the planetary cool-down of Mars make it lose its magnetic field? Posted: 30 Jul 2019 02:41 AM PDT |
| Posted: 30 Jul 2019 01:12 AM PDT For example: a system where at least 20% of all incoming waste is coffee grounds, vs a system that gets none of that. Let's assume the timescale we're talking about is 10 to 15 years. That would be (?) ~100 generations of worms. [link] [comments]  |
| What are Planck units (mostly Planck time, but also the others) actually used for? Posted: 29 Jul 2019 11:11 PM PDT I read somewhere that there were more Planck time units in one second than there were seconds that had elapsed since the beginning of the universe. Whether that statistic is actually true or not, what could possibly happen so quickly that a unit of time that short is needed to measure it? And, if I understand correctly, the other Planck units are also extremely small. What are they actually used for as well? [link] [comments]  |
| Does being exposed to confrontation/danger on a daily basis naturally increase testosterone levels? Posted: 30 Jul 2019 02:13 AM PDT |
| Is the universe quantized or continuous? Posted: 30 Jul 2019 02:26 AM PDT Perhaps with the exception of energy levels. Is there a shortest lenght, time etc implied by plank units or are they just useful scaling factors? [link] [comments]  |
| How do doctors determine if a tumor is benign or malignant? Posted: 29 Jul 2019 10:50 PM PDT |
| How long does water spend in the human body? Posted: 29 Jul 2019 01:10 PM PDT Is there a half-life to it? Given that some will pass right through, but (most?) will be absorbed into the bloodstream etc., there must not be a single answer, but all I can find online is short term answers talking about when that which passes through quickly will leave. What about the water that's more thoroughly absorbed, like that in bone marrow? [link] [comments]  |
| Can you tell the date and your location from the stars? Posted: 29 Jul 2019 12:49 PM PDT Hi, I'm writing a story where the characters wake up and they don't know where they are and don't know how much time has passed. Since many of them are experienced sailors, one decides to use the stars to figure out where they are, and it turns out that it's the Atlantic ocean and 150 years in the future. Is that the kind of thing that's possible, and if it is, how accurate/precise would it be? [link] [comments]  |
| How are the calories in food calculated? Posted: 29 Jul 2019 03:40 PM PDT |
| Posted: 29 Jul 2019 08:38 PM PDT Typical examples of the Carbon cycle follow the process of organic matter growth/burial and decay with respect to CO2. I'd like to find out what impact the hydrogen in this organic matter has on global H2O and sea levels. Additionally how does this compare to other sea level variables? [link] [comments]  |
| What is this chemical structure that was spray-painted onto this van? Posted: 29 Jul 2019 09:36 AM PDT The chemical structure in question is on this photo. I pass by it a few times and wondered what could possibly be so important, it was spray-painted onto the side of the person's van. I've done google search and found nothing exactly like it. I've asked chemistry and chemically-inclined friends, all to no avail. [link] [comments]  |
| Posted: 29 Jul 2019 08:56 AM PDT |
| Posted: 29 Jul 2019 02:52 AM PDT Coelacanth are said to be living fossils, but as I understand, the mark of a species is to be able to produce fertile offspring, if the Coelacanths from 65 million years ago are indeed the same species as today they should be able to procreate, otherwise they would just be 2 closely related species that look very similar, right?. [link] [comments]  |
| Why are rare earth metals good luminescence activators? Posted: 29 Jul 2019 11:30 AM PDT |
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