Understanding the Relationship between Frequency and Wavelength in Electromagnetic Waves, Schemes and Mind Maps of Computer science

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COMPARE THE

RELATIVE

WAVELENGTH OF

DIFFERENT FORMS

OF

ELECTROMAGNETIC

WAVES

G R O U P 2

TO BE

DISCUSSED

• (^) What is Wavelength?
  • (^) What is Frequency?
    • (^) What is Energy?
• (^) What is the relationship between frequency and wavelength?
• (^) Comparing the wavelength of the different forms of electromagnetic waves

WHAT IS FREQUENCY?

Frequency, in physics, the number

of waves that pass a fixed point in

unit time; also, the number of

cycles or vibrations undergone

during one unit of time by a body

in periodic motion. Frequency is

expressed in units of hertz (Hz)

which is equivalent to one (event)

WHAT IS

ENERGY?

Energy, in physics, the capacity for

doing work. It may exist in potential,

kinetic, thermal, electrical, chemical,

nuclear, or other various forms.

Energy can be neither created nor

destroyed but only changed from

one form to another. This principle is

known as the conservation of energy

or the first law of thermodynamics.

TO COMPARE THE WAVELENGTH OF THE DIFFERENT FORMS OF ELECTROMAGNETIC SPECTRUM WE BASE ON THE ELECTROMAGNETIC SPECTRUM. THE ELECTROMAGNETIC SPECTRUM IS THE RANGE OF FREQUENCIES (THE SPECTRUM) OF ELECTROMAGNETIC COMPARING THE WAVELENGTH OF THE DIFFERENT FORMS OF ELECTROMAGNETIC WAVES

Radio waves are a type of electromagnetic radiation with the longest wavelengths in the electromagnetic spectrum, typically with frequencies of 300 gigahertz (GHz) and below. At 300 GHz, the corresponding wavelength is 1 mm (shorter than a grain of rice); at 30 Hz the corresponding wavelength is 10,000 kilometers (6,200 miles) (longer than the radius of the Earth). They also have the lowest frequencies, from about 3,000 cycles per second, or 3 RADIO WAVES

MICROWA VESMicrowave is a form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter corresponding to frequencies between 300 MHz and 300 GHz respectively.

MICROWA VES (^) Sourc e Vibrating Electrons Uses/ Communication Applications particularly long- distance radio relay systems (satellite television and communication)

INFRAR ED Sourc e Hot objects Uses/ Applications Missile guidance, long distance photography, medical treatment, burglar alarms, remote controls and household electrical appliances.

VISIBLE LIGHT

THE VISIBLE SPECTRUM IS

THE PORTION OF THE

ELECTROMAGNETIC

SPECTRUM THAT IS VISIBLE

TO THE HUMAN EYE. IT HAS

A WAVELENGTHS FROM

ABOUT 380 TO ABOUT 750

NANOMETERS. IN TERMS OF

FREQUENCY, THIS

ULTRAVIOLET Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm(with a corresponding frequency around 30 PHz) to 400 nm (750 THz), shorter than that of visible light, but longer than X-rays.

ULTRAVIOLET Sourc e Arcs and gas discharges Uses/ Applications

Medical

treatments,

sanitation

process,

sterilization, and

fluorescence.

X-RAYS Sourc e

Electrons

striking a

target

Uses/Applications Medical purposes, security, engineering applications

GAMMA RAY A GAMMA RAY, ALSO KNOWN AS GAMMA RADIATION IS A PENETRATING FORM OF ELECTROMAGNETIC RADIATION ARISING FROM THE RADIOACTIVE DECAY OF ATOMIC NUCLEI. IT CONSISTS OF THE SHORTEST WAVELENGTH ELECTROMAGNETIC WAVES, TYPICALLY SHORTER THAN THOSE OF X-RAYS. WITH FREQUENCIES ABOVE 30 EXAHERTZ (30× HZ), IT IMPARTS THE HIGHEST PHOTON ENERGY. GAMMA RAYS HAVE A WAVELENGTH RANGE BELOW 100 PM. THEY ARE THE MOST ENERGETIC FORM OF ELECTROMAGNETIC