marcusl's latest activity
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Mmarcusl reacted to ohwilleke's post in the thread High School What ever happened to Classical Unified Field Theory? with
Informative.
There are maybe a dozen or two preprints filed in the General Relativity and Cosmology category of arXiv on this subject every year (I... -
Mmarcusl reacted to PeroK's post in the thread Undergrad What is the Difference between Maths and Classical Mechanics? with
Like.
I don't understand this type of thinking. It's a bit like asking what's the difference between chemistry and biology? Or, what's the... -
Mmarcusl replied to the thread Graduate How many interpretations of QM do you speak?.I’m a lurker in these interpretation threads—I like the discussions even though I often don’t understand a lot of what’s being...
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Mmarcusl reacted to Klystron's post in the thread High School Why do people not notice the equinox when it happens? with Like.
Suggest not noticing the equinox corresponds with several modern cultural trends. People not engaged in agriculture generally do not...
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Mmarcusl replied to the thread Undergrad How do bar detectors work in gravitational wave detectors?.The most sensitive Weber bar, designed at Stanford, used a 4800 kg aluminum cooled to 2 to 4K to reduce thermal noise. I forget its...
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Mmarcusl replied to the thread Unknown apparatus - vacuum tube of some kind?.That tubing is pretty small to pull a meaningful vacuum, so I vote for pressure—but not very high or the fittings would fly off. Maybe...
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Mmarcusl reacted to berkeman's post in the thread Things you wish you knew when you started to study physics? with Like.
Welcome to PF. :smile: One of the most useful tips that I learned early in my study of Physics and Engineering is to carry units along...
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Mmarcusl reacted to Matterwave's post in the thread High School Randomness in quantum mechanics with Like.
Or if you ask vague enough questions without putting in any effort to actually learn the material. "A mechanism for randomness [would...
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Mmarcusl reacted to Chestermiller's post in the thread Undergrad An intuitive reason for the definition of temperature via entropy and internal energy? with Like.
when you use a partial derivative, you must specify what its being held constant. The thing that is being held constant is volume...
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Mmarcusl replied to the thread Undergrad An intuitive reason for the definition of temperature via entropy and internal energy?.dS=dE/T. At low temperature, systems are highly ordered and a small energy input results in a relatively large increase in disorder. At...
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Mmarcusl reacted to Dale's post in the thread High School What Medium Does Light Travel Through in Space? with Like.
Those are just artifacts of the SI units. They are not part of nature. They don’t even exist in some other unit systems. Space is...
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Mmarcusl replied to the thread Engineering Second degree for engineers for more job opportunities?.WWGD, you have addressed many of the post replies at great length, but the OP is long gone. BTW, note that he/she kept talking about...
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MYou flunked two semesters of community college? If I'm reading that right, that's not a good sign of potential success at this time...
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Mmarcusl replied to the thread Two A/D use cases for Radar.1. Yes, counting ADC clock cycles is equivalent to measuring time. Keep in mind that many pulse waveforms exhibit range-Doppler...