1 Wave-theoretical-insight into the Relativistic-length-contraction, Time- Dilation of Super-Nova Light-Curves and Five Alternative Interpretations of the Cosmological-red-shift

This paper makes use of some astronomical-observations to gain deeper insight into the foundations of physics. Alternative-interpretations of cosmological-red-shift are generally rejected on the ground that „tired-light-interpretations ‟ are inconsistent with the observations of time-dilation of super-nova-light-curves; whereas it is shown here that these curves are time-domain-representations of amplitude of light. So, these curves can be Fourier-transformed into wave-number-domain, and it is this wide band of waves which propagates in inter-galactic-space, and reaches us after millions of years. These Fourier-transformed-components, being electromagnetic-waves, get red-shifted by any mechanism that can cause spectral-shift, and when transformed back into time-domain, show time-dilation. Thus, time-dilation of super-nova light-curves, or the relativistic-time-dilation, means „red-shift of light ‟ due to any mechanism. Similarly, the relativistic-length-contraction is also explained using wave-theory. With this explanation, this letter presents five new possible-mechanisms for the „cosmological-red-shift‟; which will also give some insight into pure physics. These alternative-interpretations are: (i) Inter-galactic-photons can also get red-shifted due to vacuum-polarization-mechanism; (ii) Spherically-expanding-wave-front of light can be viewed as a spherically-expanding cavity, continuously changing its impedance, causing around-400 dB reflected-power back to the source; (iii) Cumulative-phase-alteration of extra-galactic-photons cause