Topic 5 - Light And The Electromagnetic Spectrum - Uses Of The Em Spectrum Flashcards
What are the main uses of the EM spectrum?
Communications, satellite transmission, cooking, thermal imaging, vision, security marking, observing internal structures, sterilizing food/medical equipment
The electromagnetic (EM) spectrum encompasses various types of waves used in different applications.
What types of waves are included in the EM spectrum?
Radio, Microwave, IR, Visible, UV, X-ray, Gamma
These categories represent the range of electromagnetic radiation, each with unique properties and uses.
Fill in the blank: __________ can be produced by oscillations in electrical circuits or can induce oscillations in electrical circuits.
[Electromagnetic waves]
This refers to how electromagnetic waves can be generated or manipulated.
What is the primary use of microwaves?
Cooking, communication
Microwaves are commonly used in household cooking appliances and in communication technologies.
What is the primary use of infrared (IR) waves?
Thermal imaging, short range communication, optical fibres
Infrared waves are utilized in various technologies for sensing and communication.
What is the primary use of visible light?
Vision, photography, illumination
Visible light is essential for human sight and is widely used in photography and lighting.
What is the primary use of ultraviolet (UV) light?
Security marking, fluorescent lamps, disinfecting water
UV light has applications in security features, lighting technologies, and sanitation.
What is the primary use of X-rays?
Observing internal structure of objects, airport/medical scanners
X-rays are crucial in medical imaging and security scanning.
What is the primary use of gamma rays?
Sterilising food/medical equipment, treating cancer
Gamma rays are used in medical treatments and sterilization processes.
