Over the past 50 years the development and improvements surrounding the invention of lasers have made it one of the most useful tools today. As scientists understood it better, new uses were found for the technology. Which brings it to today when it is an invaluable tool in many fields. There are many different types of lasers with differing functions. Lasers which are used in the medical field are precision lasers. Laser technologies have revolutionized the medical field, enabling safer and more effective treatments for vision correction, hair removal, and skin rejuvenation, as a result of their precise cutting. Laser cutting isn’t technically cutting. It does cut through material if necessary, but this is done in the same way as marking the material; by burning, melting, vapourising or blowing the material away with concentrated gas. No cutting means no jagged edges, and, therefore, a better finish. Also, lasers play a crucial role in fibre optic communications. By transmitting data as pulses of light through thin glass fibres, lasers enable high-speed and long-distance communication networks that power the internet and telecommunications systems worldwide. As early as 1974 lasers were being utilized in supermarket barcode scanners which today has developed into the banking systems where you can share your information via the QR code. The importance of the laser was understood from the beginning when astronauts on the Apollo 11 space mission in 1969 used a laser to measure the distance between the earth and the moon. Their readings were accurate to within a fingers width. The lasers used to measure distance do so without the need for physical contact. They allow you to make more precise readings, and you can record them more quickly, this measuring tools has a number of applications in architecture, crime scene investigations, and military operations.
The word “Laser” is an acronym for Light Amplification by Stimulated Emission of Radiation. A laser is light. Light moves in waves and ordinary visible light, say from a household light bulb, comprises multiple wavelengths, or colours, and are incoherent, meaning the crests and troughs of the light waves are moving at different wavelengths and in different directions. However, in a laser beam, the light waves are “coherent,” meaning the beam of photons are moving in the same direction at the same wavelength. This coherence is what allows lasers to produce highly focused beams and deliver energy over long distances without significant divergence. Laser beams can be hotter than the surface of the sun, which is why even tiny laser beams can etch serial numbers into diamonds. They have precision and enough power to etch the world’s hardest natural material.
This controlled power of the light is only a small fraction of what is believed that it can do. Light is powerful, it changes night into day. It dispels the darkness and shadows into glorious morning. The living God asked the Old Testament prophet Job a question in chapter 38 verse 19, Where is the way where light dwelleth? Job had no answer for God. The existence of light is the phenomenon. However, in the New Testament Jesus Christ says ‘I am the light of the world’. I am the one who can change night into day, darkness to morning light. When light shines it dispels all the shadows. The book of Revelations says in chapter 21 verse 23 speaking about heaven ‘And the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof.’ The lamb is Christ Jesus and he is the light. His light shines on our hearts of stone and turns them into hearts of flesh. His light shines on are blinded minds and brings understanding and wisdom. He came ‘To give light to them that sit in darkness and in the shadow of death, to guide our feet into the way of peace.’ Luke 1:79 His light is as powerful and accurate as a laser beam.
P. Pilgrim pilgrimway101@yahoo.com
