The story
Short for relative ionospheric opacity meter.
Etymology from Wiktionary, CC BY-SA 4.0.
riometer
Today it means: An instrument used to quantify the amount of electromagnetic wave ionospheric absorption in the atmosphere. Full definition →
Today it means: An instrument used to quantify the amount of electromagnetic wave ionospheric absorption in the atmosphere. Full definition →
Short for relative ionospheric opacity meter.
Etymology from Wiktionary, CC BY-SA 4.0.