The mainstream types of chipless tags are digitally encoded and work at more than one millimetre range, like silicon chips. Their potential markets go beyond the lowest cost-highest volume potential markets because they have other attributes beyond cost.
or red shift. noun, Astronomy. 1. a shift toward longer wavelengths of the spectral lines emitted by a celestial object that is caused by the object moving away from the earth. Compare cosmological redshift, Doppler effect, gravitational redshift. Origin of redshift.
Subtle changes in the color of starlight let astronomers find planets, measure the speeds of galaxies, and track the expansion of the universe. Astronomers use redshifts to track the rotation of our galaxy, tease out the subtle tug of a distant planet on its parent star, and measure the expansion rate of the universe.