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Landy
Gamma rays can be used in treat cancer, because gamma radiation will send a very intense dowse of radiation to a small area without a need to make an incision, then will destroys cells so they they can’t grow.

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X-rays are mainly used to examine the inside of the body, usually for broken bones and other internal injuries.

X-rays are electromagnetic radiations of short wavelength and high frequency, with wavelengths ranging from 10⁻⁸ to 10⁻¹² metres and frequencies of 10¹⁶ to 10²⁰ hertz. X-rays use ionizing radition to take photos. X-rays have enough energy to pass through the body, and they continue passing through until it hits a detector on the other side of the body.

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Microwaves are a appliance used in most households to cook food. They work by using microwaves a electromagnetic wave that is non-ionizing meaning it cannot effect the electrons in a atom. These waves are used because they bounce off metal, can move through glass, paper and plastic and are absorbed by food. This absorption then makes the water molecules in the food vibrate creating friction and heat.

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Radio Telescopes (in astronomy) - Alyssa 

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Radio Telescopes (in astronomy) - Alyssa 

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All astronomy is about observing waves of light. Stars, galaxies and gas clouds in space emit visible light as well as light from other parts of the electromagnetic spectrum. One of these ways is by using radio telescopes to detect and amplify radio waves from space, turning them into signals that astronomers use to enhance our understanding of the Universe. They use radio waves and microwaves between wavelengths of about 10 meters and 1 millimetre emitted by astronomical objects. Radio waves with wavelengths longer than about 10 meters are absorbed and reflected by the Earth's atmosphere and do not reach the ground.

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The tuning fork is made of a flexible metal (mostly steel) with a shank end and a forked end, shaped like the letter 'U'. The tuning fork has a fixed resonance frequency and vibrates when struck. After waiting for the initial overtone column to pass, the sound emitted by the tuning fork has a fixed pitch. The pitch of a tuning fork is determined by the length of its forked section.
Because f = v / λ, and since the wavelength λ is proportional to the length of the chord or column, the pitch is inversely proportional to this length.

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Ultrasound (sonography) uses high-frequency sound waves to view inside the body. The sound waves are bounced around the boundaries between tissues and are pictured in at real-time speed so we are able to see what is moving inside of the body. The frequency of an ultrasound wave is too high pitched for the human ear to hear. Ultrasounds are mechanical waves.

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Bluetooth is used for a short range wireless connection between electronic devices. Bluetooth uses ultra-high frequency radio waves (UHF). The bluetooth technology uses 2.4 GHz ISM spectrum band (2400 to 2483.5 MHz), which enables a good balance between range and throughput. The 2.4 GHz band is also available worldwide, which makes it a true standard for low-power wireless connectivity.

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Subtractive synthesis of sound waves - electronic music / analog synthesizer (victor) 

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Subtractive synthesis of sound waves - electronic music / analog synthesizer (victor) 

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A synthesizer is a musical instrument that works by producing pure sound waves through electric signals, and different sounds are produced by modifying the shape of these waves. There are two main kinds of analog synthesis- additive, where different waves are added together, and subtractive, where the waveform is modified by having different parts silenced.
There are four primary shapes of sound waves that are typically used: sine, sawtooth, square, and triangle. The thing that produces these waves is called the oscillator.
There are filters like High Pass and Low Pass. The Low pass allows low frequencies to pass through, creating a bass sound, and the High Pass does the opposite- it is self explanatory. There are settings that allow this filter to start kicking in later to make a sound that changes over time, and resonance effects that make the waves turn sharper to make the tone brighter.

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One of the most common uses of waves is communication. Cell phones, radios, televisions and other devices rely on radio waves to transmit information over long distances.

Wi-Fi networks also use radio waves to connect our devices to the Internet, allowing us to access information from anywhere in the world.

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A device called a magnetron inside the oven produces electromagnetic radiation in the microwave frequency range, which then bounce around off of the metal, reflective walls inside. This causes the water molecules in food to vibrate. This vibration results in friction between molecules, which produces heat that cooks the food.

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Radiation treatment uses high-energy particles or waves such as x-rays and gamma rays to treat cancer.
During this treatment, a machine known as a linear accelerator generates high-energy waves targeted at the area affecting the body. The waves then penetrate the body and deposit energy in the cancer cells, damaging their DNA and killing them.

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X-Rays are mostly used to examine the body.  They're mainly used to examine bones and joints. Sometimes they're used to detect problems affecting soft tissue, such as internal organs. X-rays helps to show problems like bone fractures or breaks.

X-rays are a form of electromagnetic radiation similar to radio waves, microwaves, visible light and gamma rays. X-ray photons are highly energetic and have enough energy to break up molecules and hence damage living cells. When X-rays hit a material some are absorbed and others pass through. Generally, the higher the energy the more X-rays will pass through. The penetrating power that allows us to take internal images of the human body or objects.

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Microwave ovens use electromagnetic waves that penetrates food, causing some molecules to vibrate and generate heat which is transferred throughout the food, which then heats up the food from inside out.

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During this surgery, the cornea in the eye is reshaped with a programmed excimer laser (an ultraviolet laser) to remove a thin layer of corneal tissue. This emits ultraviolet light and ultraviolet radiation is a type of wave and improves light focus.

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X rays use electromagnetic waves to examine areas of the body such as bones and joints or even internal organs.
They have very small wavelengths, between 0.03 and 3 nanometers but have a very high energy. Therefore, they are able to pass through most objects like the human body.

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Radio waves are mainly used for communication in radio broadcasts, military communications, walkie talkies, mobile phones, wireless internet connections, and more.
The range of the radio spectrum is considered to be 3 kilohertz up to 300 gigahertz (300,000,000 kilohertz).
Radio waves are more widely used for communication than other electromagnetic waves mainly because their large wavelength allows them to pass through the atmosphere in any weather, foliage, and through most building materials, and the waves can bend around obstructions through diffraction.

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In the medical field, gamma rays are used in award-winning cancer screening devices and in surgical procedures to guide removal of tumors. it is an electromagnetic radiation(EMR).
Radiation works by making small breaks in the DNA inside cells. These breaks keep cancer cells from growing and dividing and cause them to die