# All Activity

1. Past hour
2. ## Will we ever have an viable alternative Theory to rival GR?

Any large scale modified gravity ( TeVeS is a re-worked MOND ) has mostly been put to rest by the recent Gravitational wave detections. GR is a geometric model, and as such, can only be quantized by quantizing space-time, as LQG attempts. That doesn't mean that a return to a field model will forever resist quantization, or that an entirely new approach, such as M-theory won't yield the desired results. The only requirement is that each model reduces to the others ( gives equivalent results ) at the appropriate boundaries.
3. Yesterday
4. ## Taxation without representation

Very well put. And every week they do more to whittle away at the regulations that are in place to keep just such from happening. If Americans were ever asked straight out if they want to remove more regulations that allow extremist wealthy folks to get away with murder, the vast majority would say no. And that's not how our leadership votes.
5. ## Will we ever have an viable alternative Theory to rival GR?

Yep, I agree with that summation. Same actually applies to Newtonian. We cannot say that its wrong as we use it everyday here on earth and as well as space endeavours. GR gives the same results with far more accuracy. Much as using a rule to measure a window frame rather then a set of Vernier calipers. I'm interested though in further comment on this TeVeS (tensor-vector-scalar gravity and the supposed claims it is making re GR inconsistencies. My view much froth and bubble with not much actual experimental substance and obviously apparently not too much interest with the scientific community in general, which in my book says a lot.
6. ## Idea for jet engines, who to contact?

Here, have a look at this discussion... https://aviation.stackexchange.com/questions/31613/why-are-contra-rotating-jet-engines-so-rare
7. ## Will we ever have an viable alternative Theory to rival GR?

We know for a fact that GR is an incomplete theory in the context of a plausible GUT but I would say that there will never be an alternative theory to GR, it hopefuly will be broadened and supplemented with new insight enabling understanding of quantum gravity but there can be no alternative, its there and it works, it just doesn’t explain things beyond it. Having said that, I have to confess I haven’t read the wired and the arxiv articles yet
8. ## The magic i

Undamped harmonic motion gives a displacement formula Asin(at+b). Where A is the amplitude of the oscillation? When the motion is damped the amplitude decreases exponentially but the periodicity is unchanged. There is no physical connection between the exponential and trigonometric components.
9. ## Taxation without representation

That's enlightening. I never thought of it that way. So, the US has got a significant problem whereby the governance and media reflects the whims of those that can afford it.
10. ## Taxation without representation

We used to think the Republican Party was largely conservative with some racist and extremist elements at the margins. Now, we realize instead that it’s largely a racist amd extremist party with some conservative elements at the margins.

12. ## Determine atomic mass of isotopes with chemistry.

Well thank you kind sir.
13. ## Determine atomic mass of isotopes with chemistry.

Have a rep for trying.
14. ## Taxation without representation

It is why I roll my eyes so strongly at those who use mid ground and work between the aisle platitudes. There simply is no middle ground to be had. The current system is not designed for compromised solutions. It is a take everything you can get and F%\$# everyone else system. We need a national standard for national election which ensures the right to vote for every citizen who pays taxes. Ones IRS filing should double as their voter registration.
15. ## Supreme court rules in favor of colorado baker in same-sex wedding cake case

We're making progress if conservatives are launching instead of lynching. It wasn't that long ago....
16. ## Scientific Bible

There are bacteria that have a reddish hue which thrive close enough to the surface to get sunlight. You can see it from shore, and don't have to be that high above it. I don't know if that's how the Red Sea got it's name. That's historically been a pretty bloody part of the world.
17. ## Taxation without representation

This is what it looks like when the only people being represented are those wealthy enough to skew results unnaturally and force their viewpoint on the rest of the population. Enough wealth buys you tailor-made news coverage (since the news no longer is required to truthfully inform), social media storms painting whatever picture suits your agenda, and lobbyists who will actually make your illicit gains legal. This country is NOT made up of moderate conservatives and extreme conservatives, but that's the way our representatives vote, compared to the rest of the major nations. That should tell us we have no representation that isn't bought with extreme wealth.
18. ## Supreme court rules in favor of colorado baker in same-sex wedding cake case

Many Conservatives are up in arms over Sarah Huckabee Sanders being refused service at a Restaurant in Northern VA. It seems hypocritical on their part considering the numerous arguments launched defending a businesses right to refuse service to members of the LGBTQ community.
19. ## What is faith?

I believe many have been trying to tell you that over the last 16 pages or so.I Your faith is grounded in the fact that man since he first climbed down out of the trees, has been asking many questions and wondered at the awesome nature of the universe that surrounds him. No satisfactory answer was forthcoming, so he turned to magic in those early days, and saw this mythical higher power in many things that he could not explain. This has carried on down through the ages. Then science came along, and all was revealed...at least up to t+10-43 seconds. Your statement/argument is defeated because it has no basis in what we observe nor any empirical evidence to support it.
20. ## God and the Big Bang

Whether you are in favour of it matters not. That's where the evidence leads us. And with your incredulity of which I would say you don't fully understand, my incredulity balks at this supposed "force" or "creator" you seem at peace with.....You know, where did it/she/he come from? https://www.youtube.com/watch?v=G4a7F6dOdlc
21. ## Determine atomic mass of isotopes with chemistry.

But appears convinced that studiot does not exist.
22. ## Determine atomic mass of isotopes with chemistry.

That's why a chose lead as an example. You can get nearly pure 208Pb by isolating lead from thorium minerals. You can compare it to lead from other sources and show that there are differences. Getting other pure isotopes is tricky. You can get monoisotopic mercury by neutron irradiation of (naturally single isotope) gold.
23. ## Determine atomic mass of isotopes with chemistry.

What you get is only the classical atomic weights. In nature H has 0.02% deuterium. O has O16, O17 and O18 in various %. So the old atomic weights is a mixture of isotopes. We need H₂O that is made from pure isotope ¹H and pure isotope ¹⁶O. Only then can we get real relative atomic mass to compare with the CODATA obtained from mass spectrometry..
24. ## Why hasn't evil prevailed?

People refer to their boats, ongoing projects, and cars as he/she. I'm not sure that trying to get everyone to use gender pronouns the exact same way is going to be a successful endeavor.
25. ## Determine atomic mass of isotopes with chemistry.

The atomic masses were determined (often to quite high accuracy) well before there were any mass spectrometers. For example, you can take a gram of hydrogen(mixed with nitrogen r something else that won't react), and pass it over hot copper oxide. The hydrogen will be oxidised to water. You can trap that water by passing the gas over phosphorus pentoxide. And you can weigh the water. You will get 9 grams of water and so you know that the mass of oxygen that combines with 1 gram of hydrogen is 8 grams . It gets a bit more complicated when you try to decide if water is HO H2O HO2 or what, but it was pretty much all worked out by classical chemistry.
26. ## Determine atomic mass of isotopes with chemistry.

I know isotopes exists. What I am really interested is getting the actual relative atomic mass using our chemical balances and not through mass spectrometry. Then compare it with the CODATA. Has anyone ever checked if their scales don't give short weights and measures! Even in ancient times, officials would come to check the scales you use to measure grains. What if mass spectrometry is off! Avicenna would even ask if God exists.
27. ## Is quantum physics too small to interact with gravity?

I agree but the link between the formalism and what the modle says about physical reality is often not clear to readers. For example what do the following famous formalisms tell us is happening in Physical reality. ${\nabla ^2}\varphi = 0$ ${\left( {\int {fgdx} } \right)^2} \le \left( {\int {{f^2}dx} } \right)\left( {\int {{g^2}dx} } \right)$ The latter is, of course one of the foundation statements of the quantum theory.