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Sunspots are phenomena on the Sun's photosphere that appear as temporary spots that are darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic flux that inhibit convection. Sunspots appear within active regions, usually in pairs of opposite magnetic polarity. Their number varies according to the approximately 11-year solar cycle.
The year 1975 involved some significant events in television. Below is a list of television-related events which happened that year.
TLC is an American cable television channel owned by Warner Bros. Discovery. First established in 1980 as The Learning Channel, it initially focused on educational and instructional programming. By the late 1990s, after an acquisition by the owners of Discovery Channel earlier in the decade, the network began to pivot towards reality television programming—predominantly focusing on programming involving lifestyles and personal stories—to the point that the previous initialism of "The Learning Channel" was phased out.
KCND-TV was a television station which broadcast from Pembina, North Dakota, United States from 1960 to 1975, targeting the Winnipeg, Manitoba, Canada market some 60 miles to the north. It was the forerunner of current Global Television Network affiliate CKND-DT in Winnipeg, which remains in operation.
Solar cycle 24 is the most recently completed solar cycle, the 24th since 1755, when extensive recording of solar sunspot activity began. It began in December 2008 with a minimum smoothed sunspot number of 2.2, and ended in December 2019. Activity was minimal until early 2010. It reached its maximum in April 2014 with a 23 months smoothed sunspot number of 81.8. This maximum value was substantially lower than other recent solar cycles, down to a level which had not been seen since cycles 12 to 15 (1878-1923).
Space Command was a Canadian children's science fiction television adventure series, broadcast on CBC Television in 1953 and 1954, the first time the network aired its own dramatic series.
This is a list of British television related events from 1974.
A Third Testament was a Canadian documentary television miniseries which aired on CBC Television from 1974 to 1975. A book based on the series was published subsequent to the broadcast.
Eye of the Beholder was a Canadian travel documentary television miniseries which aired on CBC Television in 1974.
Hard Times was a Canadian documentary television series which aired on CBC Television in 1975.
Stompin' Tom's Canada is a Canadian music and documentary television series which aired on CBC Television from 1974 to 1975.
Newfoundland Holiday is a Canadian nature and travel documentary television series which aired on CBC Television from 1973 to 1974.
Some Honourable Members is a Canadian political talk show television series which aired on CBC Television from 1973 to 1975.
Take Time With Noel Harrison is a Canadian music variety television series which aired on CBC Television from 1974 to 1976.
Sunday Best is a Canadian documentary television series which aired on CBC Television from 1971 to 1976.
The Oldtimers was a Canadian documentary television miniseries which aired on CBC Television from 1974 to 1975.
Opening Night was a Canadian theatrical drama television miniseries which aired on CBC Television 1974 to 1975.
The Great Debate is a Canadian television series that featured debates between pairs of panelists over a given subject. It was first shown on Global Television Network in 1974, and later broadcast by CHCH-TV from Hamilton, Ontario. The series was produced intermittently until 1983.
References
- ↑ Corcelli, John (September 2005). "Sunspots". Canadian Communications Foundation. Retrieved 7 May 2010.