Applications of Electromagnetic Waves

Radio Wave Telecommunications Broadcasting: Radio and television transmission Astronomy study Microwave Satellite transmissions Radar systems to detect objects(size, form and position) Cooking Infrared Night vision Thermal imaging and physiotherapy Remote controls for TV/VCR Heating in physiotherapy Thermometer Cooking Visible Light Sight Photosynthesis in plants Photography Ultraviolet Identification of counterfeit notes Production of fluorescent effects Production … Read more

Electromagnetic Waves Spectrum

(This file is shared by Philip Ronan under the Creative Commons Attribution-Share Alike 3.0 Unported license.) The full range of electromagnetic waves, arrange orderly in their wavelengths and frequencies is called the electromagnetic spectrum. The figure above shows the electromagnetic waves in the electromagnetic spectrum. In SPM, you need to know The order of the … Read more

Electromagnetic Waves

Electromagnetic Waves Electromagnetic waves come from a whole variety of sources. They differ greatly in their wavelengths and in their effects, but they have certain fundamental properties in common. The common properties of electromagnetic waves are as below: They are transverse waves: Electromagnetic waves are transverse wave. The moving wave effect is produced by oscillating … Read more

Applications of Sound Wave

Applications of Sound Wave Sonar   Q & A Explain how sonar is used to measure the depth of a sea. for visualizing subcutaneous body structures including tendons, muscles, joints, vessels and internal organs for possible pathology or lesions. In the sonar system, the broadcasting equipment emits ultrasonic pulses. The pulses are reflected back from … Read more

Loudness and Pitch

Loudness and Pitch Loudness of a sound depends on the amplitude of the sound wave. The greater the amplitude of a sound wave, the louder the sound is. The pitch of a sound is high or low of the sound. The pitch of sound is determined by its frequency. The higher the frequency, the higher … Read more

Sound Wave

Characteristic of Sound Wave Sound wave is a series of compression and rarefaction of layers of air molecules repeatedly through space. The forward and backward vibration of the air molecules in the direction of motion of a sound wave shows that sound is a longitudinal wave. Propagation of Sound Wave Sound wave is a mechanical … Read more

Interference of Sound Wave

Interference of Sound Wave Experiment The figure below shows the apparatus set up to investigate the interference of sound wave. Two distanced speakers are connected to the same audio generator. A microphone is moved in front of the 2 speakers from left to right. Result:Alternating loud and soft sounds are detected as the microphone is … Read more

Interference of Light Wave

Young’s Double Slits Experiment Young’s double-slit is made up of two slits ruled on a piece of slide and painted with ‘aquadak’. When monochromatic light passes through Young’s double-slit, diffraction of light occurs and two coherent sources (same amplitude, frequency and phase) are produced. The two coherent sources will overlap and superpose to produce the … Read more

Wave Pattern Interference

Nodal Line and Anti-nodal Line An anti-node is a point of maximum amplitude where constructive interference occurs. Whereas a node is point of minimum amplitude where destructive interference occurs. The anti-nodal line joins all anti-node points. The nodal line joins all node points. Formula for Interference λ = Wavelengtha = Distance between the two wave sourcesx … Read more