90 citations · 233 across the 19 of their papers we have counts for
20 papers
Uncertainty Relation and Minimum Wave Packet on Circle
Naohisa Ogawa, Shuichi Nagasawa
We discuss on the uncertainty relation (UR) for a closed one dimensional system (circle). In such a system, we cannot use the angle along the circle as a position variable. Otherwi…
Algebraic construction of spherical harmonics
Naohisa Ogawa
The angular wave functions for a hydrogen atom are well known to be spherical harmonics, and are obtained as the solutions of a partial differential equation. However, the differen…
Geometric Flow appearing in Conservation Law in Classical and Quantum Mechanics
Naohisa Ogawa
The appearance of a geometric flow in the conservation law of particle number in classical particle diffusion and in the conservation law of probability in quantum mechanics is dis…
Open End Correction for Flanged Circular Tube from the Diffusion Process
Naohisa Ogawa, Fumitoshi Kaneko
In the physics lessons on waves and resonance phenomena in high school and college, we usually consider sound waves in a tube with open or closed ends \cite{ResnikHalliday}. Howeve…
Diffusion in a Curved Tube
Naohisa Ogawa
The diffusion of particles in confining walls forming a tube is discussed. Such a transport phenomenon is observed in biological cells and porous media. We consider the case in whi…
Simple model of photo acoustic system for greenhouse effect
Akiko Fukuhara, Fumitoshi Kaneko, Naohisa Ogawa
The green house effect is caused by the gases which absorb infrared ray (IR) emitted by the earth. It is worthwhile if we can adjudicate on which gas causes the greenhouse effect i…