For other uses, see Zechariah. The male given name Zechariah is derived from the Hebrew ×Ö°×Ö·×¨Ö°×Ö¸×, meaning The Lord has remembered.. It has been translated into English in many variant forms and spellings, including Zachariah, Zacharias and Zachary. It was the name of various men in the Bible.
Double Refraction in Minerals Double refraction is the splitting of a single ray of light into two refracted rays when passing through an anisotropic mineral. All anisotropic minerals exhibit double refraction. Double refraction can be practically observed by placing a transparent Calcite (Iceland spar) crystal on a sheet of paper with a black dot on it. When the dot is viewed through the crystal, two dots are seen.
Refraction of light. Refraction. refracted ray. angle of refraction. index of refraction. the bending of light as it travels, at an angle, from a materiâ¦. the ray that is bent upon entering a second medium. the angle between the normal and a refracted ray. the ratio of the speed of light in a vacuum to the speed of liâ¦. Refraction. the bending of light as it travels, at an angle, from a materiâ¦.