10 Feb 2014 No Comments

## Circular Polarisation Eigenstates, The Riemann-Silberstein Vector and Angular Momentum of Light

The phasor notation, i.e. the use of $e^{-i\,\omega\,t}$ instead of sinusoidal time variations, is simply a tool of convenience for analysing the time-harmonic behaviour of systems described by linear equations, such as Maxwell’s equations, electric circuits and some kinds of acoustic waves. But for Maxwell’s equations, there is a much deeper meaning of the complex […]

10 Feb 2014 No Comments

## Fluorophores and Old Aged Particles

The fundamental particles of particle physics are memoryless insofar that they have no internal state that tells them when they are old and when to die. A newly created muon is exactly as likely to decay in the next infinitessimal time interval $\mathrm{d} \,t$ as one that somehow has lingered for ten mean muon lifetimes. […]

by Rod Vance in Optics, Physics Tags: Fluorescence Lifetime, Fluorophore, Jablonsky Diagram, Lifetime, Memoryless Probability Distribution, Memorylessness, Particle Lifetime