Experiment (horse-powered boat)

The Experiment was an early nineteenth century boat powered by horses and incorporated the then novel idea of a screw propeller.

History

The Experiment was a horse-powered ferry boat. It was a twelve-ton three-mast boat drawing a few feet of water, about 100 feet long by 20 feet beam. Its driving mechanism, an in-water screw, was invented by David Grieve in 1801. The boat was constructed by David Wilkinson (some sources give his name as Varnum) in 1807 to 1810, depending on the source. It was propelled by a "goose-foot paddle" large mechanical screw propeller in the water (instead of a paddle wheel at water surface). The new technology devised by Grieve and Wilkinson was powered by eight horses on a treadmill. The horse boat technology to propel the boat upstream was originally invented by David Grieve and granted a patent February 24, 1801 in the patent category of "Boats to ascend rivers". The complete recorded patent was lost in the 1836 U.S. Patent Office fire. The novel idea of propelling vessels upstream by the use of a large mechanical screw in the water is now referred to as Ericsson’s propeller.

Experiment (disambiguation)

An experiment is a set of observations performed in the context of solving a particular problem or question.

Experiment may also refer to:

See also

Experiment (locomotive)

Experiment was a steam locomotive designed and built by Richard Roberts in 1833 for the Liverpool and Manchester Railway (L&MR). The locomotive had vertical cylinders driving via bell cranks.

History

L&MR No.32Experiment was built in 1833 with vertical cylinders mounted just behind the chimney, driving the wheels via a bell crank. The locomotive also had piston valves. These valves were probably the reason that the design was not a success, rather than the bell crank transmission, which was used successfully in other locomotives. Another reason that the locomotive was not successful was steam leakage from the cylinders. Experiment was withdrawn after a few months.

Three similar locomotives were built for the Dublin and Kingstown Railway. Locomotives to this design were built for the Dundee and Newtyle Railway, but they were soon altered.

References

Eden, Wisconsin (disambiguation)

Eden is the name of some places in the U.S. state of Wisconsin:

Dorothy Johnston

Dorothy Johnston (1948) is an Australian author of both crime and literary fiction. She has published novels, short stories and essays.

Born in Geelong, Victoria, Australia, Johnston trained as a teacher at the University of Melbourne and later worked as a researcher in the education field. She lived in Canberra from 1979 to 2008, and currently lives in Ocean Grove, Victoria (Australia). She is a former President of Canberra PEN and a founding member of the Seven Writers' Group.

Awards

Bibliography

Novels

Short stories

Eden (TV channel)

Eden is a digital television channel broadcasting factual content in the United Kingdom and Ireland as part of the UKTV network of channels. The channel originally launched on 8 March 2004 and relaunched in its current format on 27 January 2009. The channel is available on Sky, Virgin Media, Smallworld Cable, TalkTalk Plus TV and BT TV, but not on the digital terrestrial supplier Freeview.

History

The channel launched on 8 March 2004 as UKTV Documentary, showing factual documentaries, mainly taken from the BBC archives, on a variety of subjects if not covered by another channel in the UKTV network, such as Jacob Bronowski's The Ascent of Man. Much of this programming had come from the former UKTV channel UK Horizons, which had closed down the day before and which the channel, along with UKTV People, replaced. UKTV Documentary occupied the same broadcasting slot as UK Horizons.

On 9 October 2008, UKTV announced plans to rebrand UKTV Documentary and UKTV People in early 2009. The news came just two days after UKTV's entertainment channels were rebranded to Watch, Gold and Alibi. They announced that UKTV Documentary would be rebranded as Eden and this rebrand took place on 26 January 2009. As part of the rebrand, the channels programming output changed from all documentaries to primarily documentaries focusing on the natural environment. All other documentaries were transferred to UKTV History or UKTV People, depending on their subject matter.