Harrison’s argument against the interpretation of the cosmological redshift as a Doppler effect is revisited, exaggerated, and discussed. The context, purpose, and limitations of the interpretations of this phenomenon are clarified.

2 Radiation and Atoms 1 2.1 Width and Shape of Spectral Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1.1 Lifetime Broadening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1.2 Collision or Pressure Broadening . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1.3 Doppler Broadening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

In the present contribution a simple thought experiment made with an idealized spherical enclosure bathed in zero-point (ZP) electromagnetic radiation and having walls made of a material with an upper frequency cut-off has been qualitatively analysed. As a result, a possible mechanism of filling real cavities with ZP radiation based on Doppler’s effect has been suggested and corresponding entro...

An analog of the classical Doppler effect is investigated in spaces (manifolds) whose tangent bundle is endowed with a transport along paths, which, in particular, can be parallel one. The obtained results are valid irrespectively to the particles mass, i.e. they hold for massless particles (e.g. photons) as well as for massive ones.

I argue that the Doppler shift asymmetries observed in some young stellar object (YSO) jets result from the interaction of the jets with the circumstellar gas, rather than from jets’ rotation. The jets do rotate, but at a velocity much below claimed values. During the meeting I carefully examined new claims, and found problems with the claimed jets’ rotation. I will challenge any future observa...

The airborne coherent Doppler lidar could provide the wind velocity relative to the motion of the lidar. The retrieval algorithms are complex corresponding to Ground-based lidar, due to the Doppler shift caused by mobile platform. This article gives a thorough analysis of the wind retrieval algorithms for the wind products of airborne Doppler lidar, include the correction for the lidar velocity...

Photoacoustics has been broadly studied in biomedicine, for both human and small animal tissues. Photoacoustics uniquely combines the absorption contrast of light or radio frequency waves with ultrasound resolution. Moreover, it is non-ionizing and non-invasive, and is the fastest growing new biomedical method, with clinical applications on the way. This review provides a brief recap of recent ...