No. Photons are massless wherever you find them. They "hide" behind wave-particle duality, and that lets them do the quirky things they do. And, though they can assume their choice of "costume" as it suits them, they have no mass whatsoever.
laxatives
The time dilation factor doesn't get large until you get up to a HIGH percentage of lightspeed. It can be calculated by the Lorentz Factor at the link below. At .7c, the Lorentz Factor is 1.83, so multiply the "apparent" duration by the Lorentz Factor of 1.83. The duration in realtime, then, would be just under 10 years.
One description of Lorentz polarization occurs in x,y,z or cartesian coord's...If a particle has relativistic velocity in (z) direction only, it is said to have Lorentz spatial invariance in that direction.....while the x,y plane remains a Newtonian or Galilean surface.
The Lorentz Factor is the name of the factor by which time, length, and "relativistic mass" change for an object while that object is moving and is often written (gamma).
The Lorentz Factor is the name of the factor by which time, length, and "relativistic mass" change for an object while that object is moving and is often written (gamma).
fatigue
Fatigue decreases the excitatory level of the spinal cord
The volume of a sphere is 4/3 pi R3, which shows that volume is proportional to the cube of the linear dimension. Alternatively, the linear dimension is proportional to the cube-root of the volume.If volume decreases by a factor of 27, diameter decreases by a factor of (cube-root of 27) = 3. Diameter becomes 1/3rd the original diameter.
Fatigue.
The population decreases.
Biotic factor
It seems that rheumatoid factor is the only name that is used for it.