wjs018

Official response from Greg Bernhardt

It’s years since I last used PhysicsForums, but found it immensely useful in the old days while going through my undergrad physics degree (it was less useful for PhD courses). I am not morally opposed to providing AI attempts at an answer in threads where nobody else chimes in. However, using real accounts that belong to other users is wildly over the line. I was surprised to see this wasn’t really called out in the official response thread by the existing users as that is the part of all this that is the most egregious to me.

IIRC, piefed’s private votes are disabled for “trusted” instances. You can see which instances are trusted here.

I guess it depends what you want to do with it. I do lots of product photography, so I know exactly what lens I need for my studio and the type of product I am shooting. So, I spent about as much on a lens as I did a body. Getting a better sensor with more accurate colors saves me time in the post-processing step.

When I was starting out, I just used a kit zoom lens, but realized that most of my shots were around the same focal length. So that is when I invested in a faster, nicer prime lens at that focal length.

I wrote my PhD thesis about bacterial flagella. Not about the motor though (which is incredible), but about the long part of the flagella that is extracellular. It is able to change its shape as the bacteria moves. The mechanism by which this happens is at the same time quite simple, but just about impossible to explain via text. Really, really neat bit of evolution that has proven to be home to incredibly rich physics that is still being studied to this day.