long wave
AM radio band
Long wave refers to radio waves with wavelengths typically over 1,000 meters, used for broadcasting and navigation.
Long-wave signals can travel vast distances by following the Earth's curvature.
The term also describes economic cycles spanning decades, as in Kondratiev long waves.
In physics, long wave may describe any radiation at the lower-frequency end of a spectrum.
Carrier intensity conveys information
- AM radioAmplitude modulation broadcasting
- radio transmissionWireless electromagnetic signal
- shortwaveHigh-frequency radio band
- skywaveRadio reflected by atmosphere
ionosphere · antenna · transmitter · receiver · tuning · bandwidth · kilohertz · radio spectrum
Spatial repetition interval
- frequencyRate of recurrence
- hertzFrequency measurement unit
- oscillationRepeated back-and-forth movement
- electromagneticInvolving electric and magnetic fields
infrared · spectrum · propagation · amplitude · waveform · kilohertz · low frequency · radio frequency
Media reaching foreign countries
- public radioNoncommercial broadcast service
- talk showsInterview-based broadcast programs
- weather reportsAtmospheric condition summaries
- emergency servicesUrgent public safety organizations
cultural programs · BBC World Service · Voice of America · overseas service · propaganda
Increase in size
- groundswellGrowing public sentiment
- rollerRotating cylindrical tool
- surgeSudden powerful increase
- fetchGo get and return
period · amplitude · crest · trough · deep water · open ocean · wavelength · undulation
Electron-controlling glass cylinders
- crystal setBasic radio receiver
- wirelessUntethered signal transmission
- bakeliteEarly thermosetting synthetic resin
- PhilcoDefunct appliance brand
art deco · 1930s · 1940s · warm sound · restoration · collectors
amplitude modulation
Carrier intensity conveys information
- AM radioAmplitude modulation broadcasting
- radio transmissionWireless electromagnetic signal
- shortwaveHigh-frequency radio band
skywave · ionosphere · antenna · transmitter · receiver · tuning · bandwidth · kilohertz · radio spectrum · interference
wavelength
Spatial repetition interval
- frequencyRate of recurrence
- hertzFrequency measurement unit
- oscillationRepeated back-and-forth movement
electromagnetic · infrared · spectrum · propagation · amplitude · waveform · kilohertz · low frequency · radio frequency · electromagnetic spectrum
international broadcasting
Media reaching foreign countries
- public radioNoncommercial broadcast service
- talk showsInterview-based broadcast programs
- weather reportsAtmospheric condition summaries
emergency services · cultural programs · BBC World Service · Voice of America · overseas service · propaganda
swell
Increase in size
- groundswellGrowing public sentiment
- rollerRotating cylindrical tool
- surgeSudden powerful increase
fetch · period · amplitude · crest · trough · deep water · open ocean · wavelength · undulation · offshore
vacuum tubes
Electron-controlling glass cylinders
- crystal setBasic radio receiver
- wirelessUntethered signal transmission
- bakeliteEarly thermosetting synthetic resin
Philco · art deco · 1930s · 1940s · warm sound · restoration · collectors
- "Long" wordslonghorn, longevity
- radio wavesRF, AM, FM, radio spectrum, frequency modulation
- broadcastingbroadcasting, TV, radio, television, news