light velocityspecial relativity/ A0330 Special relativityThe Fizeau experiment is analysed in terms of special relativity on the hypothesis that light in a material medium is alternately emitted and absorbed. It is found that if dispersion is neglected this 'extinction' theory leads to the same ...
光速不变啊!光速constant speed of light 我们现在知道了: 第一,匀速直线运动和静止没有区别 物理定律 —— 至少是力学的定律 —— 应该在所有匀速直线运动或者静止的坐标系下是一样的。 第二,麦克斯韦解方程解出来一个光速,可是物理学家有个疑问: 这个光速是相对于谁的呢? 如果光速是相对于光源的速度,那...
Speed of Light SpeedofLight •Howfastisthespeedoflight?–dependsonmaterial:–invacuum,c=3x108m/s •Whatisthisspeedrelativeto?•Whatisthespeedofsoundrelativeto?–theground?theair?thesource?thereceiver?(soundmovedrelativetothemediumitwas movingin:v=[B/ρ]1/2)SpeedofLight TheMichelson-Morley...
The first attempted measurement of the speed of light that I know of was by Galileo himself and an assistant, who stood on opposing hilltops and attempted to communicate by opening a lantern shutter and waiting for the lantern on the opposing hill to be opened in response. They did not not...
The behavior of a two-dimensional light bullet propagating with a velocity greater than the speed of light in a medium consisting of semiconducting carbon nanotubes is investigated by means of numerical simulation. The electromagnetic field of the investigated system is described using Maxwell's equatio...
We follow the assumption that relativistic causality is a key element in the structure of quantum mechanics and integrate the speed of light, c, into quantum mechanics through the postulate that the (reduced) Planck constant is a function of c with a lea
Transmittance is the percentage of the luminous flux passing through the medium and the incident luminous flux. As an important index of the optical properties of the transparent electrode, transmittance indicates the ability of light of different wavelengths to pass through the electrode. When the th...
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A plane monochromatic wave propagates in vacuum at the velocity c. However, wave packets limited in space and time are used to transmit energy and information. Here it has been shown based on the wave approach that the on-axis part of the pulsed beams pr
As one of the key elements in bacterial cell division, the cytoskeletal protein FtsZ appears to be highly involved in circumferential treadmilling along the inner membrane, yielding circular vortices when transferred to flat membranes. However, it remain