The Importance Of Electromagnetic Waves

INTRODUCTION

Electromagnetic waves propagate in waves with several measurable characters, namely: wavelength, amplitude and speed frequency. The amplitude is the wave height, whereas the wavelength is the distance between the two peaks. The frequency is the sum waves passing through a single point in a single unit of time. The frequency depends on the speed of wave propagation. hence, the speed of the electromagnetic energy is constant. Electromagnetic energy has a very important role in everyday life. It can be seen from the field of technology, information, communication and in the field of health. Example in the field of communication can be seen with the use of mobile phones among the community. Thanks to microwaves, one can give orders

Electrical oscillations

b. Sunlight

c. Mercury lamp

d. The shooting of electrons in a vacuum tube on a metal chip

1.4 properties of electromagnetic waves

• Does not require creeper

• Includes transverse waves and has the same properties as transverse waves

• Not carrying mass, but carrying energy

• The power carried is proportional to the frequency of the wave

• The electric field (E) is always perpendicular to the magnetic field (B) and in phase

• Have momentum

• Divided into several types depending on their frequency (or wavelength.

1.5 Spectrum of Electromagnetic Waves Electromagnetic waves include light, radio waves, X-rays, gamma rays, micro waves, and others. Electromagnetic waves differ only in wavelength and frequency.

Refer to the table below to provide an overview of the types of spectrum of electromagnetic waves that are normally associated with various frequency and wavelength intervals. These intervals are often undefined and sometimes overlapping. For example, electromagnetic waves of about 0.1 nm are usually called X rays, but if they are from nuclear radioactivity, they are called gamma rays.

The spectrum of electromagnetic waves that are sorted from the shortest wavelength to the longest wavelength