swansont

Have you tried using a search engine?

Spend a lot of time in New York, have you?

! Moderator Note OK, that’s enough. BS limit has been exceeded.

Not sure who georgie is, but that’s not a very good definition. Science describes how nature behaves, not the why. Any part of why that you can figure out is a bonus. e.g. F = GmM/r^2 describes the force between two massive objects; a behavior. It says nothing about why masses attract, just that it happens. We don’t understand why we have so much matter compared to antimatter. We don’t know what dark matter is. We don’t know how to reconcile QM and GR at small scales. We don’t understand why neutrinos have nonzero mass. There are a lot more things on the list of things we don’t understand.

True. Science advancing doesn’t require that all areas advance at the same rate. Sometimes theory leads experiment, sometimes experiment shows the need for more/better theory. Sometimes we have to wait for technology to advance before theory can be tested (see e.g. Bose-Einstein condensation, gravitational waves) There are more areas of inquiry than there were 50 years ago, and more then than 100 years ago.

I have a recollection of similar quotes from ca. 120 years ago. Michelson saying of physics that “most of the grand underlying principles have been firmly established” in 1894 https://en.m.wikiquote.org/wiki/Albert_A._Michelson (ironic, since the M-M experiment pointed to a huge paradigm shift) Thomson, Lord Kelvin declaring that “No balloon and no aeroplane will ever be practically successful” in 1902 https://en.m.wikipedia.org/wiki/William_Thomson,_1st_Baron_Kelvin (he also said “X-rays will prove to be a hoax." in 1883) More here: https://en.m.wikiquote.org/wiki/Incorrect_predictions

Foundations is only a tiny part of physics

Really? Nothing new since 1973?

! Moderator Note The moderation history shows only that the title was edited; nothing about it being moved. And it has nothing to do with climate science.

! Moderator Note You’re missing the point. This isn’t your blog, and there isn’t a “share your stories” section. There should not be a “next time”

! Moderator Note No, it isn’t. If you want to do a blog, you need to do it elsewhere. This is a science discussion board. That’s not how capacitors or gravity works

You forgot the disclaimer: All characters and other entities appearing here are fictitious. Any resemblance to real persons, dead or alive, or other real-life entities, past or present, is purely coincidental.

Just a general observation that saying that something absorbs in the IR isn’t specific enough to know how it ties in to the greenhouse effect The condensation from particulates that TheVat mentions is what I recall as being an important effect. (I recall a colloquium where it was shown you could track ships from satellites from the condensation caused by their smokestack emissions on an otherwise cloudless area of the ocean)

Shade of visible radiation. And the IR behavior wouldn’t necessarily be the same. The solar IR spectrum is weighted toward near-IR (1-2 microns), while the earth emissions are mid-IR (out near 10 microns) so strong absorption near 1-2 microns would shield us from solar but not trap earth emission.

Can you demonstrate that this is true?

! Moderator Note No. You posted some stuff 14 years ago and then returned after a 13-year hiatus, and, 14 years ago, had some exchanges with someone who is AFAIK not a scientist. As for the rest, airing issues with how science works is not an appropriate response to the thread.

Everything has a cost/benefit. A bigger ribcage or other protection means more weight and less flexibility. More weight means slower movement and/or more calories required. What would be the point of protecting the digestive system if you starve?

! Moderator Note “episode” is not the typical description of a book. “Book Talk” is for discussion of books.

! Moderator Note The sandbox is for testing posts, e.g. seeing if LaTeX renders properly. Responses are not appropriate.

In most cases. But the underlying principle is that you will get the same physics result, regardless of your choice of frame of reference.

Your post was hidden because of the sockpuppet reference. Had it just been a throwaway amusing comment, I would have left it alone. The difference being that a sockpuppet (or troll) accusation is directed at a person, and much more likely to elicit a response, which derails the thread. As Phi notes, we need more than posting on the same topic. We’ve had situations where multiple students from a university class posted on a topic. This isn’t unprecedented.

What other “kinds” of KE are there? I only know of the “kind” that is given by 1/2 mv^2 It can be applied to different particles and be measured/calculated at different times (hence you have initial and final as two common times) Reference frames are incredibly useful for those that actually solve physics problems. No. the difference in kinetic energy represents the change in kinetic energy at two different points in time. It is not a definition of KE.

It’s not math, it’s experimental data.

If you can explain how accusations of sockpuppetry (or trolling) are on-topic, I will restore your post. If mod actions are going to chill such discussion, I count that as a positive.

I’m guessing people with respiratory issues would love this. Like Seattle residents during the forest fires this past summer. What do mean “we”? I personally sacrificed twice as many last year as compared to a decade ago.