Are Cell Phones Dangerous?

5. List the bands of the electromagnetic spectrum starting with the band of longest wavelength.

the electromagnetic spectrum order is Radio waves, microwaves, infrared rays, visible light rays, ultraviolet rays, x rays, and gamma rays. the order is in order of wavelength, radio waves have the longest wave length and gamma rays have the shortest wave length. Each of these types of rays have different and very important purposes. Radio waves are used mostly for communications, microwaves are used to cook, radars, cellphones etc, infrared rays are used for their heat you could use them in controls thermal imaging, alarm systems and more. visible light is obviously used to see things such as printers and cds, ultraviolet rays are used to sterilize produce vitamin d etc.xrays are used to see inside people and things and lastly gamma rays are used to kill cancer cells. as helpful as all these can be they do have some harmful aspects. Large doses of radio waves are believed to cause cancer, leukaemia and other disorders, microwaves are known to cause cataracts in your eyes, infra red has a possibility of making humans overheat, with visible light Too much light can damage the retina in your eye. uv rays can cause sunburn skin cancer and damage in retna , x rays can cause cancer and cell damage and lastly gamma rays could cause cell damage and mutations. there is also a different type of ray on the electromagnetic spectrum and it has the smallest wave length its called cosmic radiation it is used in outer space and

Ultraviolet waves are just beyond visible and are on the electromagnetic spectrum. They can reach a high enough level that can be harmful to humans, plants, and animals.

Electromagnetic Radiation can help us in various ways to learn about matter in the universe. It helps us by determining the location of matter in the universe, planets for example. The waves that bounce back at a certain time can determine the distance between you and the planet. NASA and other people have come up with many ways of finding matter in the universe. There is a lot of ways to find matter in the universe but this is the most popular. The type of wave it sends back may be ragged or straight because of the surface that it is bouncing on. Radio waves and microwaves are used to observe interstellar clouds and track where the dark gas might be heading. Infrared waves that we can see from very powerful telescopes

Electromagnetic waves are similar to ocean waves (ScienceNASA). The vibrations of charged particles produce the waves. Long electromagnetic waves such as radio waves have the lowest frequency, and carry less frequency. Gamma rays have the shortest and highest energy waves (ScienceNASA). Frequency is the number of waves that pass in a certain amount of time. It is usually measured as the number of wave cycles per second; Hertz (Hz) (Lucas). Adding energy increases the frequency, and makes the wavelengths shorter (ScienceNASA). Wavelength is the distance between the peaks of a wave; meters (Lucas). The electromagnetic spectrum is divided into seven main categories. The categories are radio waves, microwaves, infrared, visible, ultra-violet, x-ray, and gamma ray. Visible Light is the only one we can see with the human eye. The speed of light is 186,282 miles per second

Visible light used to be the only light from visible to the human eye before scientifically proven by Washington University in St. Louis that humans can see infrared light

Well, let’s think about light as a type of wave — it makes it easier to imagine sunshine’s 8-minute journey from the Sun to the Earth. This sunlight contains the full electromagnetic spectrum of wavelengths: radio waves longer than a football field, x-rays shorter than a single atom, infrared, ultraviolet and every visible color from neon pink to eggplant purple. The Earth is constantly bombarded with these waves, absorbing some while others bounce off. The colors we see in the world around us are actually the rejected wavelengths colliding with color-sensitive proteins in the backs of our

Electromagnetic radiation is good for us humans because it helps us in many ways. One example on why electromagnetic radiation is good for us is the uses it helps us with. Uses like medical x-rays, observing the internal structure of objects, airport security scanners, and killing cancer cells. As it states in Ck12, Electromagnetic Spectrum. Therefore, in our daily lives, we use many different radiation waves without even knowing. Electromagnetic radiation describes and ranges the wavelengths of all light going from radio waves to gamma rays. Electromagnetic radiation is good for us humans, although they have disadvantages, there are more good uses of electromagnetic radiation than bad uses of electromagnetic radiation. Another

Ultraviolet light, also known as UV light, is a type of electromagnetic radiation. Ultraviolet light comes from the sun and is invisible to the human eye. Although humans are constantly exposed to UV light, too much ultraviolet radiation could be potentially harmful to living tissue. Electromagnetic radiation is transmitted in waves or particles at different wavelengths and frequencies (Lucas 2015). This range is known as the electromagnetic spectrum which is split into

For instance, the speed of light has been measured at roughly 670 million miles per hour (Wile 365). With some math, scientists have learned that light can travel the circumference of earth approximately 7 times each second and that it takes around 8 minutes for the sun’s rays to reach earth. Scientists can now calculate the wavelength, which is the distance between two crests, and frequency of a light wave, but also the energy of a photon at the same time and use the values interchangeably (Wile pp. 352 and 373). The electromagnetic spectrum, the collection of all forms of light, shows that visible light is only a small fraction of all light. The spectrum ranges from energetic gamma, X-ray, and ultraviolet radiation to relatively low-energy light waves such as infrared, microwave, radar, TV, and FM and AM radio. Visible light, also known as the visible spectrum, sits between ultraviolet and infrared. It is the only portion of the electromagnetic spectrum that humans can see (Wile 370). Although much of the spectrum is unperceivable to the eye, it has numerous uses. For example, X-rays are used to find broken bones and treat cancer, infrared light is used in remote controls, microwaves heat food, and FM and AM waves are used in

The term waves can have an infinite amount of meanings. It can refer to a girl's hair, the beach and most importantly a physics theme. In a physics classroom, a wave is a disturbance that carries energy from one point to another. The types of waves are endless from electromagnetic, sound, magnetic, longitudinal and transverse just to name a few. The later two are key in class as they are the most common types of waves and not only are they used to teach a concept but are also used in our everyday lives. A key difference between a longitudinal and a transverse wave is the way they transport energy. While a transverse wave does not require a medium to pass on energy a longitudinal on the other hand must have a medium for it to pass down energy.

In light there are different waves and particles. Light is made up of electric and magnetic fields. Due to this fact, light is an example of electromagnetic radiation, it is the changing of these fields to travel through space shifting energy maneuvering from one area to another. Since light is an electromagnetic wave, each one has a certain wavelength. Telescopes help us to view the visible light of the electromagnetic spectrum. Most of the electromagnetic spectrum, such as infrared, x-rays, ultraviolet, and gamma rays, don’t reach earth’s surface to be examined. A telescope in space, above the atmosphere, however, is said to be diffraction limited. Since the speed of light is constant a wavelength of radiation of a star can be seen as its frequency. Frequency is recorded based on a certain number of waves emitted within a brief second.

Furthermore, each galaxy appears differently. UV waves are invisible to the human eye because of their shorter wavelengths (NASA, 2010). Scientists can study objects in space by using the three subdivisions of UV radiation: near ultraviolet, middle ultraviolet, and extreme ultraviolet (NASA, 2010).

Electromagnetic (EM) waves from low radiofrequencies (RF) to high optical frequencies pervade our environment. They interact with matter by coupling directly to the motion of charge carriers. This carrier motion can be associated with characteristic spectral resonances resulting from absorption and emission of EM energy.

This technology uses visible spectrum of light, a part of the electromagnetic spectrum that is still not greatly utilized.