Recent content by calvinjhfeng

It's indeed very cool. Is it an IDE software and provide library for java? EDITED: Nevermind I will look through the tutorial myself. Thank you so much.

I just want to say thank you for all the thoughtful responses and help.

I just recently picked up MATLAB and still learning its syntax and built-in functions. I am working on a project that deals with image analysis, such as extract every pixels from an image and analyze them in forms of matrices. I am more experienced in Java than C++ or Matlab. I also feel...

I know little to nothing about G.R. but it is interesting to look up knowledge,especially physics, so please correct me if I am wrong.. It is easy to picture how one giant mass distorts spacetime on 2D scale, but what if there is multiple bodies of masses present and would this turn into a...

That is true. Actually now I might have the same question for Carl Sagan. What has Carl Sagan contributed to astrophysics other than publicizing it? He's like one of the most inspiring scientists I can see in my time (through youtube videos.) I wonder if it's a trade off. I realize...

That sounds missing A LOT of things. Like detectors, vacuum tube, source of particle, computers, tools to create precision within instruments and etc are missing. Anyways I always took it as a marketing gimmick, like a way to encourage youth by telling them possibilities are within their hands.

Yes and that is why I said his research went all over the place. It doesn't specifically say what he has suggested or what he has purposed. Like it doesn't say what has he added to the table of string theory that makes string theory more acceptable to the scientific community. I am no expert...

Dr. Kaku is an eloquent speaker for Physics and he publicized sciences and raise global awareness of controversial issues on science (like nuclear weapons, global warming, etc.) I am not questioning the validity of his popularity. I am just curious, what has he done on the theoretical side...

Yeah basically I am trying to explain cooper pair to people, like I want to tell them how the mechanism is involved. However, even myself don't really understand how does cooper pair stick together over long distance. I would like to know more about e-p interaction too, if it has other...

For my understanding of electron-phonon interaction is that when electron moves across a lattice, it distorts charges and it leads to a higher density of positive charge at an instance of a second. As the electron leaves the region of high positive charge, another electron will jump into...

I am just curious, for nuclear power plant or nuclear weapon/detonation, how to create a beam of neutron that's energetic enough to go inside the U-235 atom and trigger the chain reactions? What was the most conventional or the oldest way to create this beam of neutrons in lab back in the...

Ahh I see, thank you. So are all computer power units have DC output? Can I modify the connection so I can use it as a power source to let's say charge a capacitor?

I understand AC is economic for transportation and easy to produce from converting mechanical energy into electrical energy. However, why don't electronics turn on and off because of this alternating nature of the current? For light bulb, maybe it does turn on and off and our eyes don't have...

I was wondering why is the nucleus willing to confine itself in one place while the electrons are free to appear anywhere around the nucleus within the orbital. Electrons have this wave function, is there one for the nucleus?

1 kg is indeed quite far from what I found after plugging in calculator. It takes 10^12~16 kg to give it a considerable push.