The Universal Soil Loss Equation (USLE) was developed at the USDA National Runoff and Soil Loss Data Center at Purdue University in a national effort led by Walter H. Wischmeier and Dwight D. Smith. The USLE was published in 1965 in USDA Agriculture Handbook 282.
1965
YearAdded:
Image Credit:
Image Caption:
The Universal Soil Loss Equation for estimating average annual soil erosion.
2003
A = average annual soil loss (in tons/acre)
R = rainfall erosivity index
K = soil erodibility factor
LS = topographic factor
C = cropping factor
P = conservation practice factor Era_date_from:
Hydro-Quebec's 735,000 volt electric power transmission system was the first in the world to be designed, built and operated at an alternating-current voltage above 700 kV. This development extended the limits of long-distance transmission of electrical energy. On 29 November 1965 the first 735 kV line was inaugurated. Power was transmitted from the Manicouagan-Outardes hydro-electric generating complex to Montreal, a distance of 600 km.
YearAdded:
Image Credit:
Courtesy Wikicommons/abdallahh (cc-by-2.0)
Image Caption:
A pylon of the 735kV power transmission system.
Era_date_from:
1965
2005
Established 1965 the Orroral Valley Station, as well as the Honeysuckle Creek (1967) and Tidbinbilla (1965) sites supported NASA’s Deep Space Network, Manned Space Flight Network, and Spacecraft Tracking and Data Acquisition Network. The stations played a key role in supporting the Apollo 11 moon landing, with the Honeysuckle Creek facility providing the first historic pictures of man walking on the moon on July 20, 1969 (July 21st in Australia), as well as providing voice and telemetry contact with the lunar module.
YearAdded:
Image Credit:
Courtesy Flickr/Percita (CC BY-SA 2.0)
Image Caption:
Orroral Valley Tracking Station
Era_date_from:
1965
2010
Established 1965 the Tidbinbilla Tracking Station, as well as the Honeysuckle Creek (1967-1981) and Orroral Valley (1965-1985) sites, supported NASA’s Deep Space Network, Manned Space Flight Network, and Spacecraft Tracking and Data Acquisition Network. The stations played a key role in supporting the Apollo 11 moon landing, with the Honeysuckle Creek facility providing the first historic pictures of man walking on the moon on July 20, 1969 (July 21st in Australia), as well as providing voice and telemetry contact with the lunar module.
YearAdded:
Image Credit:
Original Image: Public Domain (NASA)
Image Caption:
Tidbinbilla Tracking Station
Era_date_from:
1965
2010
Innovations
Established 1965 the Tidbinbilla Tracking Station, as well as the Honeysuckle Creek (1967-1981) and Orroral Valley (1965-1985) sites, supported NASA’s Deep Space Network, Manned Space Flight Network, and Spacecraft Tracking and Data Acquisition Network. The stations played a key role in…
Read More
Established 1965 the Orroral Valley Station, as well as the Honeysuckle Creek (1967) and Tidbinbilla (1965) sites supported NASA’s Deep Space Network, Manned Space Flight Network, and Spacecraft Tracking and Data Acquisition Network. The stations played a key role in supporting the Apollo 11…
Read More
Hydro-Quebec's 735,000 volt electric power transmission system was the first in the world to be designed, built and operated at an alternating-current voltage above 700 kV. This development extended the limits of long-distance transmission of electrical energy. On 29 November 1965 the first 735…
Read More
The Universal Soil Loss Equation (USLE) was developed at the USDA National Runoff and Soil Loss Data Center at Purdue University in a national effort led by Walter H. Wischmeier and Dwight D. Smith. The USLE was published in 1965 in USDA Agriculture Handbook 282.
The USLE is…
Read More