# What are the wavelengths of the electromagnetic spectrum?

## What are the wavelengths of the electromagnetic spectrum?

Red light has a wavelength of ~700 nm, and a frequency of ~4.3*1014 Hz….The EM spectrum.

Type of Radiation Frequency Range (Hz) Wavelength Range
ultraviolet 1015 – 1017 400 nm – 1 nm
visible 4 – 7.5*1014 750 nm – 400 nm
near-infrared 1*1014 – 4*1014 2.5 μm – 750 nm
infrared 1013 – 1014 25 μm – 2.5 μm

### Which EMW has longest wavelength?

Red has the longest wavelength and violet has the shortest wavelength. When all the waves are seen together, they make white light. Ultraviolet (UV) light—is radiation with a wavelength shorter than that of visible light, but longer than X-rays, in the range 10 nm to 400 .

What are the 7 waves in the electromagnetic spectrum?

The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.

What is the longest wavelength?

red light
Visible light may be a tiny part of the electromagnetic spectrum, but there are still many variations of wavelengths. We see these variations as colors. On one end of the spectrum is red light, with the longest wavelength. Blue or violet light has the shortest wavelength.

## What is the electromagnetic spectrum simple definition?

Electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength. The electromagnetic spectrum comprises the span of all electromagnetic radiation and consists of many subranges, commonly referred to as portions, such as visible light or ultraviolet radiation.

### Which electromagnetic has highest frequency?

Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies.

Is the electromagnetic spectrum a continuous range of wavelengths?

The waves cover a continuous range of wavelengths called the electromagnetic spectrum. The uses and hazards of the radiations in different parts of the electromagnetic spectrum depend on their wavelength and frequency. The Electromagnetic Spectrum is a continuous band of electromagnetic radiation.

How is spectroscopy used to study the electromagnetic spectrum?

Electromagnetic spectrum. In most of the frequency bands above, a technique called spectroscopy can be used to physically separate waves of different frequencies, producing a spectrum showing the constituent frequencies. Spectroscopy is used to study the interactions of electromagnetic waves with matter.

## How to calculate the wavelength of a radio wave?

Calculate the wavelength of the waves broadcast by this radio station. Show clearly how you work out your answer. (3 marks) (iii) Draw a vertical line on the diagram above to show the position of this radio wave in the electromagnetic spectrum. (1 mark)

### How many nanometers are there in the electromagnetic spectrum?

Optical astronomers use both angstroms (0.00000001 cm, or 10 -8 cm) and nanometers (0.0000001 cm, or 10 -7 cm ). Using nanometers, violet, blue, green, yellow, orange, and red light have wavelengths between 400 and 700 nanometers.