Simple Engineering Notes

 Properties of Laser Laser light has some special properties that make it different from ordinary light. 1. High Intensity Laser light is very intense, which means it has very high energy compared to normal light. 2. Monochromatic Laser light has only one wavelength or one colour, unlike ordinary light which has many colours. 3. Highly Directional Laser light travels in a single straight direction and does not spread much over long distances. 4. Coherent In laser light, all the light waves move in the same phase, which makes the beam strong and focused. 5. Low Divergence Laser beam spreads very little while travelling, so it can cover long distances without losing strength. Conclusion Because of these special properties, lasers are widely used in engineering, medicine, communication, and industry.

  What is Laser? Laser is a device that produces a very strong, narrow, and concentrated beam of light. The word LASER stands for Light Amplification by Stimulated Emission of Radiation. Simple Definition A laser is a source of light that emits light in one direction with very high intensity. Key Features of Laser 1. Laser light is very bright 2. It travels in one straight direction 3. It has only one colour 4. It can travel long distances without spreading Why Laser is Different from Normal Light? Normal light spreads in all directions, but laser light travels in a single direction as a focused beam. Applications of Laser 1. Used in medical surgery 2. Used in optical fibre communication 3. Used in cutting and welding metals 4. Used in barcode scanners and CDs Conclusion Laser is an important device in engineering and daily life because it produces highly focused and powerful light.