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2. ## studiot

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13616

3. ## iNow

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23016

4. ## joigus

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2042

## Popular Content

Showing content with the highest reputation since 03/13/21 in Posts

1. ## Hiatus

Dear All, I am going to take a hiatus from the forum from today. As some of you might know, the natural sciences are not my only area of interest; in particular, I am committed to a form of spiritual practice as well, and have been living in a Buddhist monastery as a lay person for the past few years. I have made the decision to deepen this practice further by ordaining as a monk in the Theravadin Thai Forest tradition, and for various logistical and monastic-political reasons this should ideally happen at a traditional training monastery in Thailand. So tomorrow I will be departing for T
12 points
2. ## Does the world need to prepare for an economic crash soon?

A marketable skill for sure in the looming post-crash economy.
4 points
3. ## I Nearly Forgot!!

Happy St Patrick's Day!!!
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4. ## Does the world need to prepare for an economic crash soon?

Economists have successfully predicted 10 of the last 4 market crashes
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5. ## Life Near a Red Dwarf Star

The period over which tidal locking would occur is highly sensitive to the distance between the bodies, and varies by the distance to the power of 6. It is less dependent on the mass of the primary. The relationship ( assuming all else is equal) is T = a^6/M^2 So, if we take a very luminous red dwarf like Lacaille 8760 with a mass of 0.6 that of the Sun, and a Earth equivalent position in the habitable zone of 0.268AU, you get a time period for tidal locking of roughly 1/1000 of the the time it would take for the Earth to tidal lock to the Sun. For a smaller star like Proxima Cen
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6. ## Is Clay Uniform?

OK so here is some more Chemistry which I hope will also be useful to Oneworld. As I have mentioned before, homegeny depends upon the scale you are working at. So starting inside the atom things are definitely not homogenous. There is a massive nucleus surrounded by a lot of empty space containing some electrons. Uniformity is represented by saying that every atom of a particular type is the same as every other atom of that type. For example all hydrogen atoms are the same. (for those who know about isotopes I am ignoring them) If we use those atoms to build molecul
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7. ## Will humanity come back to cannibalism?

I littered your topic? You have done nothing but talk trash from the OP, your entire topic is trash, it makes no sense to anthropomorphize animal behavior yet you continually do so. You kill animals simply by breathing, ever hear of fairy flies? BTW, feel free to comment in any topic I make, I may not always be right but I at least have the integrity to admit when I'm wrong.
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8. ## Blocking Strangers From Following Me

That looks very suspicious... If somebody truly wants to just read the all messages that you posted, you can't do anything with it because in the worst scenario he or she will write crawler/harvester which will visit person profile every couple minutes or seconds (script with wget/curl in a loop), parse it, and check if sonebody wrote anything new and then parse new messages and add to the database. ps. Beware of attaching photos. Remove meta-data from photos. Don't add photos from smartphone on mobile version of this site directly! Use PC. You have no idea what meta-data they con
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9. ## Blocking Strangers From Following Me

Go to your profile. On the left is a list of the people following you. Choose "Options". You can select to not allow others to follow you.
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10. ## Blocking Strangers From Following Me

Like this ? Maybe @Sensei has some ideas ?
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12. ## Carrots in the Freezer

That seems to happen quite a lot. Have you figured out what's causing it?
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33. ## What If the Earth needed Global Warming in its Atmosphere.

Perhaps joigus cannot dispute the correctness this statement, for he is a Physicist. But I can because it is just plain wrong. To the best of our knowledge Paleoclimatology tells us that the Earth has only had its present nitrogen/oxygen atmosphere for less than half its existence. And the oxygen was not a component of the original atmosphere. The oxygen was actually released as a waste product from lifeforms that existed before oxygen for example stromatolites. Naturally the climate was also different then. So if the climate changed again, so would 'biological life
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34. ## What If the Earth needed Global Warming in its Atmosphere.

John, it's not my intention to prove you wrong, any more than it's very often my intention to prove myself wrong, for the sake of clarity and accuracy. Very often I take a back sit, click on the "follow" button, and try to learn from others, as you can easily check on the website's interface. There are many threads on which I'm just a follower. I strongly recommend you to carefully distinguish hostility towards you from rejection of your ideas, or even just honest intent to clarify your expression so that others can understand you.
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35. ## Questions on Thermodynamic Free Energy.

John, Just how easy do you think it is to realise that ambition? The heart of your OP, the nature of far-from-equilibrium thermodynamics, wasn't even a recognised field of study until the the work of the Russian chemical engineer Ilya Prigogine was brought to general attention with his award of the Nobel prize in chemistry in 1977 - that's half a century after the first firm principles of quantum mechanics and general relativity were established! It isn't an easy subject. Do you really expect to become fully conversant with it with a few brief exchanges on a general science
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36. ## Genetic Inspirations vs Random Mutations

The thoughts in OP are mostly speculative and do not follow current knowledge (see below), so I am moving it to speculations for now (depending how the discussion develops). The rules for speculative threads can be found here: https://www.scienceforums.net/forum/29-speculations/#elForumRules First of all this assertion: That is mostly wrong. Initial life on Earth did not harvest light for energy for about 500 million years. The first (known) means of energy production were likely chemolithotrophs which do not use light. And rather obviously all the microorganisms which dwe
2 points
37. ## Quantum gravity and gauge neural network

Here’s an idea. Try writing in a manner that makes sense to others. Basically, add units to your numbers, not your words. You’re making up terms and expecting to be understood. This will result in consistent failure. You have been given this feedback over and over and over again some more. You’ve been neg repped over and over and over again. You’ve not taken any of this feedback on board.
2 points
38. ## Carrots in the Freezer

The key to freezing certain things successfully is the speed with which that process is done. Slow freezing generates much larger ice crystals than fast freezing, causing greater expansion within the cells and rupturing them, hence the commercial use of pre-immersing in nitrogen. Clarence Birdseye is the guy that learned this from inuits in Labrador and came up with a way to replicate their method commercially.
2 points
39. ## Does the expansion of space mean anything for the movement of matter in space?

Quote from jcMcSwell : " Dark energy is probably the only actual force (that is not expansion itself) that will push the two objects apart over time ". Excuse me , dark energy is not an ACTUAL force .
2 points
40. ## Astrazeneca covid vaccine clotting anomaly

You are as slippery as an eel. I give up.
2 points
41. ## Time and time perception (split from Can I say that Time is Linear?)

It’s literally my job to measure time independent of time perception. I would agree that you cannot so easily disentangle time perception from time.
2 points
42. ## Einstein's Simplicity

Yes, and we moved forward from there. We know a lot more now than we used to, so we won’t be going back to 1963. Yes. And we can do much more than that - we can even probe the internal structure of the protons and neutrons themselves, and thus directly test the quark model. In particle physics we do not speak of “certainties”, but instead deal with a quantity called statistical significance. This essentially tells us the degree by which, given a sufficiently large statistical data set, an event is likely to be “real” (as opposed to being a statistical fluke of some kind). As
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43. ## Why are professors such assholes?

I'm a tenure track professor. I usually get somewhere between 50 and 100 emails a day. I allocate about 45 mins twice a day to responding to them. I sort them by importance, then I answer in order until the time is up. Then I delete the rest. Emails go unanswered every day because I could literally spend the entirety of every single day responding to them, and I have teaching, research and administration to do. I tell my students that if it's important, send it again and tag it as important, or if it's important AND urgent, bang on my office door or call my phone.
2 points
44. ## Falling into a black hole "paradox"

Consider an arbitrary event located directly on the surface in question, and attach a light cone to that event. Now look at the tangent space to the surface at that event. If the surface is like-like, the tangent space will fall to the interior of the light cone; if the surface is null, the tangent space will coincide with the surface of the light cone. So this isn’t the same - you can (at least in principle) escape from a light-like surface to infinity, but you can’t escape from a null surface. For some time, yes. This is true. I’d just like to point out that the non-existence
2 points
45. ## Falling into a black hole "paradox"

You're still not reading the posts. Nobody is suggesting light travelling from the interior to the exterior, or for that matter, in any direction that doesn't head steadily in the direction of the sigularity. md65536's picture shows all the light paths and none crosses from in to outside the EH. Typo? Perhaps you meant to say that it cannot. Light cannot orbit (a Schwarzschild BH) any closer than the photon-sphere which is 1.5 times the radius of the EH. It gets more complicated for something like a Kerr-Newman BH which is a more realistic model of actual black holes.
2 points
46. ## Going Electric

That's what they thought in the 19th century. In the 20th , they realised that the smoke doesn't "blow away", because there is no "away".
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48. ## Books Banned!

Tell him to read if he wants to. If he reads it he'll be fine. If he doesn't read it he'll be fine.
2 points
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