Electromagnetic Waves (HSC SSCE Physics): Flashcards
📚Flashcards
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Practise the cards
10 cards from this deck
Do EM waves require a medium?
Do EM waves require a medium?
No, they can travel through vacuum
Orientation of E & M fields in EM waves
Orientation of E & M fields in EM waves
Perpendicular to each other & direction of travel
Discoverer of electricity-magnetism link (1820)
Discoverer of electricity-magnetism link (1820)
Hans Christian Ørsted
Developer of EM radiation equations (1860s)
Developer of EM radiation equations (1860s)
James Clerk Maxwell
Speed of light in vacuum
Speed of light in vacuum
Scientist who ID'd speed of light as universal limit
Scientist who ID'd speed of light as universal limit
Albert Einstein
EM spectrum (order, shortest to longest wavelength)
EM spectrum (order, shortest to longest wavelength)
Gamma, X-ray, UV, visible, IR, microwave, radio
Why can light travel through vacuum but not sound?
Why can light travel through vacuum but not sound?
Light is EM wave; sound is mechanical wave (needs medium)
Visible light wavelength range
Visible light wavelength range
(violet) to (red)
Light travel time from Sun to Earth
Light travel time from Sun to Earth
Approx. 8 minutes 20 seconds