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Why shorter wavelength blu ray can store more information than longer wavelength DVD?
Blu-ray uses a shorter wavelength (405nm) compared to DVD (650nm), which allows it to have a higher storage capacity. The shorter wavelength means the laser spot can be smaller, allowing it to read and write data more densely on the disc, resulting in greater storage capacity. Additionally, Blu-ray discs use a higher numerical aperture and layering technology, further increasing their storage capacity.
What light rays have the longest wavelength?
The longest wavelength photon I could find out about was in a maser (microwave version of a laser) which uses emission between two hyperfine levels of atomic hydrogen. This had a frequency of 1.4 GHz and a wavelength of 21cm.
What is the difference between an electron and a light microscope?
A light microscope is a simple microscope that magnifies light that it collects and spread onto a screen digitally or optically. Electron microscopes is a microscope that fire electrons onto a object then it is bounced back to form an image. It enlarges the image when it is bounced back. It is fired consistently to receive a constant image. It is viewed with a electronic screen. When the electron is fired it creates light which bounces back as well. It can magnify much bigger than a optical microscope.
How is compound light microscopes different than an electron microscope?
A compound microscope uses several lenses. Pressumably it is designed to work with visible light. An electron microscope uses electrons instead of light; since electrons (typically at about a million volt) have a much shorter wavelength than light, they have a much better resolution.
What is single beam spectrophotometer?
A single beam spectrophotometer is a type of spectrophotometer that measures the intensity of light at a specific wavelength. It uses a single beam of light that passes through a sample and a reference solution to determine the absorbance. Single beam spectrophotometers are simpler in design and are typically more affordable than double beam spectrophotometers.
Why shorter wavelength blu ray can store more information than longer wavelength DVD?
Blu-ray uses a shorter wavelength (405nm) compared to DVD (650nm), which allows it to have a higher storage capacity. The shorter wavelength means the laser spot can be smaller, allowing it to read and write data more densely on the disc, resulting in greater storage capacity. Additionally, Blu-ray discs use a higher numerical aperture and layering technology, further increasing their storage capacity.
What kind of microscope use beams of electrons to produce magnified images?
These microscopes are called electron microscopes.
What is a transmission electron microscope used for?
The transmission electron microscope operates on the same principle as the light microscope but uses electrons instead of light. What you can see with a light microscope is limited by the wavelength of light. Transmission electron microscopes use electrons as "light source" and their much lower wavelength makes it possible to get a resolution a thousand times better than with light microscope.
Why does photolithography use uv light?
Photolithography uses UV light because it has a shorter wavelength, which allows for higher resolution and precision when creating patterns on the photoresist layer. The short wavelength of UV light enables it to produce fine details and smaller features on the semiconductor wafer, making it ideal for producing integrated circuits and other microelectronic devices. Additionally, UV light can be easily focused and controlled to achieve the desired patterns accurately.
What can be viewed with a light microscope?
Anything that is smaller than the wavelength of light, thatmeans that it is smaller than light and therefore is not visible, at all, to know it exists an electron microscope must be used which captures a reflection of the object a scanning electron microscope uses a computer to make the image
Two characteristics give a DVD more storage than a CD?
The DVD uses a different laser with a smaller wavelength, not the long wavelength red laser that is used for CD's. I believe the DVD laser is in the ultraviolet spectrum. Anywho, the smaller laser allows the DVD to have smaller "bumps" (which is what the laser reads). Since they are smaller, more can fit onto a disk. Also, DVD's can be 2-layer. Twice the data.
How does spectroscope separate white light into its component colors?
A spectroscope uses a prism or diffraction grating to disperse white light into its component colors by bending different wavelengths of light at different angles. This separation allows the individual colors to be observed and analyzed.
What light rays have the longest wavelength?
The longest wavelength photon I could find out about was in a maser (microwave version of a laser) which uses emission between two hyperfine levels of atomic hydrogen. This had a frequency of 1.4 GHz and a wavelength of 21cm.
What two characteristic give a DVD more storage capacity than a CD?
The DVD uses a red laser with a smaller wavelength, not the long wavelength red laser that is used for CDs. The shorter wavelength allows the beam to be more accurate. This accuracy means that more data can be stored on a DVD than a CD. Data can only be written on one side of a CD, but a DVD can be written on both sides depending on the type of DVD (for example, DVD-5) you have. For more information see the link below.
What is a transmission electron microscope used for diagnosis?
The transmission electron microscope operates on the same principle as the light microscope but uses electrons instead of light. What you can see with a light microscope is limited by the wavelength of light. Transmission electron microscopes use electrons as "light source" and their much lower wavelength makes it possible to get a resolution a thousand times better than with light microscope.
What is the difference between an electron and a light microscope?
A light microscope is a simple microscope that magnifies light that it collects and spread onto a screen digitally or optically. Electron microscopes is a microscope that fire electrons onto a object then it is bounced back to form an image. It enlarges the image when it is bounced back. It is fired consistently to receive a constant image. It is viewed with a electronic screen. When the electron is fired it creates light which bounces back as well. It can magnify much bigger than a optical microscope.
Why is the electron microscope more powerful than the optical microscope?
Short Answer:Electron microscopes have much better resolution and are capable of much higher magnification than light microscopes because the wavelength of the electrons is thousands of times smaller than the wavelength of light.Light microscopes can typically resolve structures to a fraction of a micron compared to electron microscopes which in practice achieve resolutions of a few nanometers. Practically, electron microscope can have almost a thousand times greater resolution than an optical microscope.The useful magnification of an electron microscope is also in the range of a thousand times greater than an optical microscope.The actual performance of any microscope depends on its design and lensing system and so significant variation exists in the above practical characteristics and performance of both types of microscopes can be enhanced in various ways.Long Answer:An electron microscope uses an electron beam to illuminate a specimen and produce the image.An optical or light microscope uses a light beam to illuminate a specimen and produce the image.A microscope of either type is characterized by its magnification and resolving power. The magnification depends on the lensing system and can be increased to any degree, but the maximum useful magnification is limited by the resolving power.The resolving power of a microscope can not be better than the limits placed on it by the size of the wavelength of the illuminating beam. The smaller the wavelength, the smaller the structures that can be resolved in them image.Visible wavelengths of light are a few hundred nanometers. An electron microscope operates with electrons accelerated to a few hundred thousand electron volts of energy and with a wavelength in the range of few hundredths of an Angstrom.An electron microscope has a theoretical resolving power that is much greater than a light microscope and can reveal smaller structures because the electrons used have wavelengths (few hundredths of Angstroms) almost 100,000 times shorter than visible light (few hundred nanometers).An optimized electron microscope can achieve a practical resolution of a few Angstroms and a useful magnifications in the millions of times.A good light microscope can resolve structures smaller than a micron but is limited to about a few hundred nanometers resolution. The useful magnification of a light microscope is not much more than a thousand times.The electron microscope uses electrostatic and electromagnetic fields to act as lenses to control and focus the electron beam and to form an image. An optical or light microscope employs glass lenses.
