submitted by /u/dem676 [visit reddit] [comments ..read more

I do not understand physics to the most in depth degree. I’m simply wondering how the helical drive could change our current laws of physics and how we could potentially use this with astronauts in the future. submitted by /u/Professional_Hat7854 [visit reddit] [comments ..read more

hi, i'm studying for an exam right now and i'm trying to make sense of a problem. i am asked to solve the final angular velocity (wf) if we are given a solid uniform disk with mass M, radius R, and angular velocity wi at the start, but then it has a stone (mass m and distance from AOR d), added on top of the disk. just to make sure, we couldn't use 1/2(I_disk)wi^2 = 1/2(I_disk+I_stone)wf^2 (conservation of energy) to solve this anymore, because we added a mass which is essentially adding energy? therefore the system is not actually conserving energy, and that's why you'd have to solve using a ..read more

Hello all, basically the title. What is your personal opinion and your background / past experiences? submitted by /u/littlemountman [visit reddit] [comments ..read more

It sounds dumb, I know, but I'm genuinely confused. If something with mass needs infinite energy to move at the speed of light, then does that mean that light needs any amount of energy to move at the speed of light? submitted by /u/Forener27 [visit reddit] [comments ..read more

A team of researchers have grown diamonds under conditions of 1 atmosphere pressure and at 1025 °C using a liquid metal alloy composed of gallium, iron, nickel, and silicon, thus breaking the existing paradigm. The discovery of this new growth method opens many possibilities for further basic science studies and for scaling up the growth of diamonds in new ways. submitted by /u/corona_virus_is_dead [visit reddit] [comments ..read more

I’ve met two professors that teach quantum mechanics in two ways in terms of how they handle the integrals. Professor 1: Let the students deal with the extremely complicated integrals at the cost of spending less time on the homework/tests dealing with concepts. The advantage to this, according to Professor 1, is how students will value the tools that simplify those problems later. Professor 2: Simply inform the students that some problems can be solved analytically and allude to the techniques required only as an aside so more conceptual stuff can be focused on. Professor 2 says that the phy ..read more

Maybe wrong place but I was curious if people know off the top of their head. Thanks! submitted by /u/MycologistGuilty3801 [visit reddit] [comments ..read more

I just want to control and accelerate water's speed submitted by /u/nahcansketch [visit reddit] [comments ..read more

I have recently gotten back into running, and have been running everyday for the last week on a treadmill at the gym. In the last week I have also noticed that I have received small static shocks when touching stuff every day, however this is at seemingly random times throughout the day. Just wondering if there’s a correlation between running on a treadmill and receiving static shocks or if this is a coincidence. submitted by /u/Kilian240 [visit reddit] [comments ..read more