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# Tag Archives: speed of light

## Ultimate Speed of A Material Particle – Denying the Concept of Infinite mass – Photons and More

In classical mechanics, there being no upper limit to velocity it is possible that as a particle is given more and more acceleration, its speed may go on increasing progressively and may well become greater than $c$, –in fact, it may have any velocity whatever.

This is firmly denied by the theory of relativity. It may legitimately be asked, therefore, as to what will happen if the particle is continually accelerated. Certainly, its velocity v goes on increasing and hence also its mass in accordance with the mass-velocity relation $m= \frac {m_0} { \sqrt {1- \frac {v^2} {c^2} } } = \gamma m_0$ . But as $v$ approaches $c$, $\frac {v^2} {c^2} \longrightarrow 1$ and therefore $\sqrt {1- \frac {v^2} {c^2} } \longrightarrow 0$ and hence the mass of the particle $m \longrightarrow \infty$, as shown graphically, from which it is clear that for velocities right up to 50% of $c$, the increase in mass from the value of the rest mass or inertial mass $m_0$ is quite inappreciable. (more…)

## From Newton to Einstein – Search for a Fundamental Frame of Reference

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It was on account on Newton’s insistence as to the existence of a fundamental or absolute frame of reference, called absolute space, that the search for it was carried on. This search resulted in the discovery, or rather the invention, of that monstrosity of a medium, Luminiferous Ether, as the following brief account will show:

Maxwell clearly demonstrated, in the year 1864, the inter-relationship between electricity, magnetism and light when, from the known properties of electricity and magnetism, he formulated his celebrated theory of electromagnetic radiation and have the well know equations of electromagnetic field which bear his name and are identical with those that represent a wave phenomenon. He thus established the presence of electromagnetic waves in space, travelling with the speed of light. In other words, he proved that light is an electromagnetic wave. (more…)