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Papers by Alexander Panin
Bulletin of the American Physical Society, 2013
Since being introduced into the theory of damped oscillations, we use linear differential equatio... more Since being introduced into the theory of damped oscillations, we use linear differential equation to model various oscillating systems including a pendulum. But real world pendula are not linear systems (even when the amplitude of oscillations is small). For example, air drag on a real size pendulum (from a few cm to a few meters in length) is quadratic rather
Bulletin of the American Physical Society, 2010
The idea of using a big gun to launch objects to space has been around for years -- even Isaac Ne... more The idea of using a big gun to launch objects to space has been around for years -- even Isaac Newton considered the concept. However the technology of accelerating a payload with a gun only recently began approaching orbital velocity (8 km/sec). NASA is currently experimenting with a rail gun which utilizes a magnetic field powered by electricity to accelerate a projectile along a set of rails, similar to train rails. Velocities up to 3 km/sec have been reported for small projectiles, and it seems that orbital velocities can soon become a reality too. We model a launch of various projectiles from Earth surface into the elevation corresponding to the low Earth orbit (about 200-250 km above Earth's surface). The goal of this modeling is to study feasibility of such launch (and accelerations induced), and the ballistics of the flight via Earth's atmosphere (the trajectory, air drag induced, pressure and temperature generated by air drag, etc) and thus the requirements for a mass, size, strength, heat shield, and general design of a payload capsule.
Aps Four Corners Section Meeting Abstracts, Oct 1, 2004
Aps Four Corners Section Meeting Abstracts, Oct 7, 2006
Submitted for the 4CF06 Meeting of The American Physical Society Special relativity: two postulat... more Submitted for the 4CF06 Meeting of The American Physical Society Special relativity: two postulates or one? DAVID ECKHARD, ALEXANDER PANIN, Utah Valley State College-In current physics textbooks special relativity is derived from Einstein's two postulates: 1.The laws of physics are the same in all inertial frames. 2. The speed of light is the same as measured in all inertial frames. Because the speed of light is also the proportionality constant in the strength of electromagnetic interactions, and is among three fundamental constants (c, h, G) governing laws of physics, then the second postulate is the consequence of the first one (indeed, otherwise Coulomb law and all e/m phenomena would be reference frame dependent). Therefore, should not SR be reduced to one postulate only? Details of this discussion are presented.
Aps Four Corners Section Meeting Abstracts, 2007
Aps Texas Sections Fall Meeting Abstracts, Oct 1, 2008
Aps Meeting Abstracts, Oct 1, 2003
Bulletin of the American Physical Society, 2013
Since being introduced into the theory of damped oscillations, we use linear differential equatio... more Since being introduced into the theory of damped oscillations, we use linear differential equation to model various oscillating systems including a pendulum. But real world pendula are not linear systems (even when the amplitude of oscillations is small). For example, air drag on a real size pendulum (from a few cm to a few meters in length) is quadratic rather
Bulletin of the American Physical Society, 2010
The idea of using a big gun to launch objects to space has been around for years -- even Isaac Ne... more The idea of using a big gun to launch objects to space has been around for years -- even Isaac Newton considered the concept. However the technology of accelerating a payload with a gun only recently began approaching orbital velocity (8 km/sec). NASA is currently experimenting with a rail gun which utilizes a magnetic field powered by electricity to accelerate a projectile along a set of rails, similar to train rails. Velocities up to 3 km/sec have been reported for small projectiles, and it seems that orbital velocities can soon become a reality too. We model a launch of various projectiles from Earth surface into the elevation corresponding to the low Earth orbit (about 200-250 km above Earth's surface). The goal of this modeling is to study feasibility of such launch (and accelerations induced), and the ballistics of the flight via Earth's atmosphere (the trajectory, air drag induced, pressure and temperature generated by air drag, etc) and thus the requirements for a mass, size, strength, heat shield, and general design of a payload capsule.
Aps Four Corners Section Meeting Abstracts, Oct 1, 2004
Aps Four Corners Section Meeting Abstracts, Oct 7, 2006
Submitted for the 4CF06 Meeting of The American Physical Society Special relativity: two postulat... more Submitted for the 4CF06 Meeting of The American Physical Society Special relativity: two postulates or one? DAVID ECKHARD, ALEXANDER PANIN, Utah Valley State College-In current physics textbooks special relativity is derived from Einstein's two postulates: 1.The laws of physics are the same in all inertial frames. 2. The speed of light is the same as measured in all inertial frames. Because the speed of light is also the proportionality constant in the strength of electromagnetic interactions, and is among three fundamental constants (c, h, G) governing laws of physics, then the second postulate is the consequence of the first one (indeed, otherwise Coulomb law and all e/m phenomena would be reference frame dependent). Therefore, should not SR be reduced to one postulate only? Details of this discussion are presented.
Aps Four Corners Section Meeting Abstracts, 2007
Aps Texas Sections Fall Meeting Abstracts, Oct 1, 2008
Aps Meeting Abstracts, Oct 1, 2003