Discusses the scientific research which led to the current theories of the speed of light, from classical ideas and the challenges of the Middle Ages to new theories and modern measurements.

Light is the most important part of our lives. Louise Riofrio, while working as a Scientist at NASA, made the biggest discovery of the century--the Speed of Light is changing. Starting when a child's eyes first open she describes how we learn about the world through light in our first few months of life, then how we discovered that Earth is round, and how we found we are part of a solar system and a galaxy. The Speed of Light takes you around the world from the Mediterranean to Hawaii in 100 illustrations showing where discoveries were made. This new edition shows how the size of the Universe is related to the cells of our bodies, a new discovery even closer to human life. The Speed of Light is your guide to the Universe.

Follows the study of light from learning how to measure it to harnessing its power and includes the research being done today.

A mind-expanding exploration of light and how we experience the universe

This book use easy scientific language where every term is explained thoroughly. After reading this book, you will know many secrets about nature of the universe such as the relationship between the speed of light and the observer effect, the secrets of dark energy and you will be able to explain the double slit experiment. I spent eight years wondering why speed of light is constant, because it is so difficult for any body or particle to still moving with a constant speed for long time, so constancy of speed of light since the birth of the universe seems impossible. I find that there is no cause to believe in constancy of speed of light, rather it will be more logical and acceptable if we postulate that speed of light is increased equally everywhere, so speed of light will be the same for everyone everywhere and thus the special relativity still working correctly with the new suggested postulate. I find that speed of light goes to be decreased at observation regarding to the distance that the light travels as the observation process takes time and as the speed of light is increased with time while in absence of observation light has absolute speed that is is increased equally everywhere.-I find that "Redshift" occurs as the speed of light is increased with time thus wavelength of light must be increases with time also.-I find that the universal gravitational constant (G) is increased with time.-I find that the dark matter doesn't exist where (ΔG) / r = constant value =5.11×10-37, thus the more orbit radius the more difference in (G) between (G) at the center of the orbit and (G) at the orbit .-I find that the cause of the observer effect is: "Each particle is exist in a single universe in absence of observation where each universe has a different space dimensions (Simultaneous Multiverse)" "All particles exists in Time separated universe at observation where speed of light between bodies is relative and time is relative".-I find that mass of bodies is increased at observation as the speed of light is decreased at observation..-I find that momentum of bodies is increased at observation as the speed of light is decreased at observation.-I find that wavelength is decreased at observation as the speed of light is decreased at observation.- I find that there is a fifth force and that force is the cause behind acceleration of light, it is equal to 1.43×10-48 N.- I find that light is accelerate with 6.9×10-10 m/s2.And other interesting secrets.....

Follows the study of light from learning how to measure it to harnessing its power and includes the research being done today.