# What wave lengths do dvd use?

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Asked By: Aglae Bernhard
Date created: Wed, Jun 30, 2021 8:17 AM
Date updated: Wed, May 18, 2022 4:26 AM

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## Top best answers to the question «What wave lengths do dvd use»

Existing DVDs use red light at the wavelength of 650 nm, while the new Blu-ray and HD DVD discs use blue light at 405 nm. Shorter wavelengths allow smaller “spots” to be written and read from discs, meaning more information can be packed into the same surface area.

FAQ

Those who are looking for an answer to the question «What wave lengths do dvd use?» often ask the following questions:

### 👋 What wave lengths can we see?

#### What wavelengths can you see with the human eye?

• The wavelengths of visible light are: Violet: 380-450 nm (688-789 THz frequency) Blue: 450-495 nm Green: 495-570 nm Yellow: 570-590 nm Orange: 590-620 nm

### 👋 __________ has the longest wave lengths?

• Red has the longest wavelength, about 700 nanometres (nm), while violet has the shortest, about 400 nm. Subsequently, one may also ask, which electromagnetic has the longest wavelength? Radio waves have the longest wavelengths of the electromagnetic spectrum, and the lowest energy (or frequency). Radio waves pick up where microwaves leave off.

### 👋 Wave lengths are not harmful?

• The eye often compensates for small blind spots, so it is common for damage to go unnoticed until it is severe. It is worth noting that all wavelengths over 1400nm are not equally eye-safe; light with wavelengths of around 3µm and 10µm in particular is more readily absorbed in the cornea.

Your Answer

We've handpicked 24 related questions for you, similar to «What wave lengths do dvd use?» so you can surely find the answer!

How to calculate rate of wave lengths?

Wave speed is the distance a wave travels in a given amount of time, such as the number of meters it travels per second. Wave speed is related to wavelength and wave frequency by the equation: Speed = Wavelength x Frequency.

How to find number of wave lengths?

Wavelength can be calculated using the following formula: wavelength = wave velocity/frequency. Wavelength usually is expressed in units of meters. The symbol for wavelength is the Greek lambda λ, so λ = v/f.

Which wave lengths have the highest frequencies?

#### What do waves have the shortest wavelength and highest frequency?

• Gamma rays have shortest wavelength and the highest frequency. Its wavelength is approximately and its frequency is 10²¹ Hz. Microwaves are the radio waves with the shortest wavelengths and highest frequencies. Microwaves are used for cellular phone communication.
When object appears red what wave lengths are being absorbed?

An object will appear red when it absorbs all wavelengths of visible light except for red....

Do xrays have longer wave lengths than microwaves?

#### Do microwaves have longer wavelengths than gamma rays?

• GAMMA RAYS have more energy than XRAYS, 7)1 Radio waves, microwaves and ultraviolet waves all have longer wavelengths than visible light. Considering this, do microwaves have the longest wavelength? Microwaves have a long wavelength, though not as long as radio waves.
How to find the numher of wave lengths?

#### How to calculate wavelength

1. Determine the frequency of the wave. For example, f = 10 MHz …
2. Choose the velocity of the wave…
3. Substitute these values into the wavelength equation λ = v/f .
4. Calculate the result…
5. You can also use this tool as a frequency calculator.
3 colour wave lengths the human eye can see?

Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 380 to about 750 nanometers. In terms of frequency, this corresponds to a band in the vicinity of 400–790 THz.

Do different colors have differnt frequencies or wave lengths?

#### What are the colors of a narrow wavelength?

• Colors of light that correspond to narrow wavelength bands (monochromatic light) are the pure spectral colors learned using the ROYGBIV acronym: red, orange, yellow, green, blue, indigo, and violet. Wavelengths of Visible Light
Do humans see stuff when they detect wave lengths?

#### What is the wavelength of light that the human eye can detect?

• Typically, the human eye can detect wavelengths from 380 to 700 nanometers. WAVELENGTHS OF VISIBLE LIGHT All electromagnetic radiation is light, but we can only see a small portion of this radiation—the portion we call visible light. Cone-shaped cells in our eyes act as receivers tuned to the wavelengths in this narrow band of the spectrum.
How should the string lengths of a pendulum wave differ?

#### How to make a pendulum wave of any size?

• ~ Using the this equation. L = g [Tmax/2π (k+n+1)]^2 you can make a pendulum wave of any size by replacing the variable 'L' with the desired length of your longest pendulum when calculating the variable 'K'.
Which is more energetic short wave lengths or long wavelengths?
• What does the length of the wavelength convey? (Short wavelengths have more energy, while long wavelengths have less energy.) 4. UV radiation has a relatively short wavelength, shorter than visible light.
How to get beachy waves on all lengths?
• Look 4: How to Wear Messy Beach Waves Hair Wash Hair. The best way to have long wavy hair that lasts is to prep while your strands are still damp… Apply a Thermal Protectant. Use a spray that shields hair from heat damage, such as Dove Style + Care Smooth and Shine Heat Protection Spray, before blowdrying hair ... Coat Your Hair Lightly with a Texturizing Spray… Part Your Hair into Sections… More items...
What does wave wave mean?

literary. large quantities or groups of something, one after another: Allied planes launched wave after wave of air attacks on the city.

What wave is light wave?

Light waves are just one type of electromagnetic wave. Other electromagnetic waves include the microwaves in your oven, radio waves, and X-rays. Light waves are regarded as a varying electric field (E) coupled with a varying magnetic field (B), at right angles to each other and to the direction of travel.

What is carrier wave modulated wave?

In telecommunications, a carrier wave, carrier signal, or just carrier, is a waveform (usually sinusoidal) that is modulated (modified) with an information-bearing signal for the purpose of conveying information. This carrier wave usually has a much higher frequency than the input signal does.

What is radio wave sound wave? Radio waves are electromagnetic waves that can travel through a vacuum. Sound waves are mechanical waves that require a medium to travel through. What is standing wave stationary wave?

A standing wave is also known as a stationary wave. It is a wave that remains in a constant position. This phenomenon can occur because the medium is moving in the opposite direction to the wave, or it can arise in a stationary medium as a result of interference between two waves traveling in opposite directions.

What makes a wave a wave?
• Waves are created by energy passing through water, causing it to move in a circular motion. However, water does not actually travel in waves. Waves transmit energy, not water, across the ocean and if not obstructed by anything, they have the potential to travel across an entire ocean basin. Waves are most commonly caused by wind.
What wave is a radio wave?

#### What are radio waves and what is its purpose?

• (Image credit: Ensuper | Shutterstock) Radio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and radios. These devices receive radio waves and convert them to mechanical vibrations in the speaker to create sound waves.
What wave produces the transverse wave?
• Transverse waves commonly occur in elastic solids due to the shear stress generated; the oscillations in this case are the displacement of the solid particles away from their relaxed position, in directions perpendicular to the propagation of the wave.
What travels fast p-wave s-wave surface wave? Primary waves (P-waves) are compressional waves that are longitudinal in nature. P-waves are pressure waves that travel faster than other waves through the earth to arrive at seismograph stations first, hence the name "Primary"… In air, they take the form of sound waves, hence they travel at the speed of sound. What travels faster p-wave s-wave surface wave?
• A P wave is a longitudinal wave and travels the fastest. It can travel through solids and liquids. An S wave is a transverse wave and travels slower than a P wave, thus arriving after the P wave. S waves can only travel through solids, and as a result do not travel through the liquid core of the Earth.
What causes wave?

Wave is cause by a vibration by an object .

What does wave?

Wave refers to the term

• "One of a series of ridges that moves across the surface of a liquid (especially across a large body of water) ".