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Optics Grows in Meaning
The term “optics” has been used to describe a number of different things over the years. Originally, it was used to describe the way light behaves when it passes through a medium like glass or water. More recently, it has been used to refer to the science of light and the way it is used to create images.
Birth of Optics
The birth of optics can dated back to the 7th century when a scientist named Ibn al-Haytham discovered the basic principles of optics. He showed that light travels in straight lines and that it reflected off of surfaces. He also developed the first correct model of the eye.
What Study Optics?
Optics is the study of light. It is the branch of physics that deals with the emission, propagation, and also effects of light.
Parts of Optics
- Optics is the branch of physics that deals with the behavior and properties of light, including its interactions with matter. It is the foundation of photography, and the design and use of optical instruments such as telescopes, microscopes, and lasers.
- Optical instruments use lenses and mirrors to magnify or change the appearance of an image. The most familiar type of optical instrument is the microscope, which uses a lens to enlarge very small objects. Other common optical instruments include the telescope, which uses a mirror to enlarge distant objects, and also the binoculars, which use a pair of lenses to provide a three-dimensional image.
Spectrophotometer
A spectrophotometer an instrument used to measure the amount of light that transmitted, reflected, or scattered by a sample.
What is a Spectrometer?
A spectrometer a device used to measure the properties of light, typically the spectrum of light.
Spectrophotometer Principle
A spectrophotometer is an optical instrument that measures the amount of light absorbed or transmitted by a sample. Therefore the spectrophotometer measures the intensity of light at a particular wavelength.
Beer’s Law
A: The hotter the environment, the faster the beer will warm up.
Lambert’s Law
The brightness of a light source is inversely proportional to the square of the distance from the source.
Difference between Spectrometer and Spectrophotometer
- Spectrometers and spectrophotometers are both instruments that measure the spectral composition of light. However, there are some key differences between the two instruments.
- Spectrometers typically use optical elements such as gratings or prisms to disperse the light into its component colors. This allows the spectrometer to measure the relative amounts of light at different wavelengths. Spectrophotometers, on the other hand, use a series of filters to selectively measure the intensity of light at different wavelengths. This allows them to measure the amount of light at a particular wavelength.
- Spectrometers are also typically more sensitive than spectrophotometers, meaning they can detect smaller amounts of light. Additionally, spectrometers can used to measure the spectral composition of light over a wider range of wavelengths than spectrophotometers.
Applications of Spectrophotometer
A spectrophotometer used to measure the absorbance of a sample at a given wavelength. The absorbance a measure of how much light absorbed by the sample. Therefore the spectrophotometer can used to determine the concentration of a substance in a sample, or to determine the purity of a sample.
