These are all referred to as "media". The term comes from the plural form of the word "medium", because they represent one or another "medium" or method of communication.
radio waves do not require a medium to travel,it can even travel through vaccum
Steve Leser has: Played Himself - Panelist (Democratic Strategist and Radio Host) in "Cavuto on Business" in 2000. Played Himself - Democratic Strategist in "Hannity" in 2009. Played Democratic Strategist and Radio Host in "Hannity" in 2009. Played Himself - Panelist (Democratic Strategist and Radio Host) in "The Kelly File" in 2013. Played Himself - Panelist (Democratic Strategist and Radio Host) in "The Independents" in 2013.
radio
That equipment, coincidentally, is commonly referred to as a 'radio telescope'.
Clifford Leroy Rufenach has written: 'Radio scintillation observations in the ionosphere and interplanetary medium' -- subject(s): Interplanetary medium, Ionosphere, Radio astrophysics, Radio meteorology, Scintillation spectrometry
No, radio waves do not need a medium to travel through. They are a type of electromagnetic wave that can travel through a vacuum, such as space. They can also travel through other mediums, such as air or water.
Sound waves require a medium, such as air, water, or solids, for transmission. Light, radio, and infrared waves can travel through a vacuum and do not require a medium for transmission.
The determination of the medium wave frequency range is between AM and FM radio frequencies. Medium waves have lower frequencies than FM but higher frequencies than long waves. They are commonly used for AM radio broadcasting.
Radio
radio waves
radio waves