The World's Blackest Material - An Inside Look At Vantablack

Fun Facts related to Electromagnetic Spectrum

Black Bulb

• —The black bulb emits UV radiation.
• —A dark filter material (partially) blocks the visible light emitted by the filament.
• —The filter material absorbs the visible light produced by the filament, causing the bulb to become very hot after use.

Producing X-rays at Home

O-level Science (Physics) Suggested Answers for Electromagnetic Spectrum

N05/2/3
(a) ultra-violet radiation [1], radio waves [1]
(b) number of complete waves produced per second [1]
(c) speed of wave = 3.0 × 10^8 m/s [1]
(d) transverse wave OR can travel through a vacuum [1]

N06/2/5a

different frequencies or wavelengths [1]

N08/2/2

(a) infra-red radiation [1]
(b) microwaves [1]
(c) gamma rays [1]

Satellite Communication

Microwaves are more suitable for satellite communication (e.g. Global Positioning System, a.k.a. GPS) than radio waves because microwaves have higher frequencies than radio waves, which allows microwaves to pass through the ionosphere (part of the Earth’s atmosphere).

Reference: GCSE Bitesize