William Harry Evans

Brigadier William Harry Evans C.S.I., C.I.E., D.S.O. (born 22 July 1876 in Shillong - died 13 November 1956, Church Whitfield ) was a lepidopterist and army officer who worked in India. He documented the butterfly fauna of India, Burma and Ceylon in a series of articles in the Journal of the Bombay Natural History Society. Brigadier Evans was especially interested in the taxonomy and systematics of the butterfly families Lycaenidae and Hesperiidae an example being his A revision of the Arhopala group of Oriental Lycaenidae (Lepidoptera: Rhopalocera) Bull. British Mus. (Nat. Hist.), Ent., vol. 5: pp. 85–141 (1957).

Life and work

Evans was the third son of Sir Horace Moule Evans and Elizabeth Anne, daughter of Surgeon General J. T. Tressider. His mother kindled an interest in nature and, when he was sent to King's School, Canterbury, he was already interested in butterflies and moths. He joined the army at the age of 18 and was posted with the Royal Engineers. In 1898 he began collecting butterflies in Chitral. He was sent on duty with the Somaliland Expedition (1902–04), and he injured his knee. He served in France from 1914 to 1918 and was awarded the D.S.O. and a brevet. Exposure to poison gas, however, caused him permanent chest problems. He returned to India in 1919 with his final post in the Western Command at Quetta as a Chief Engineer.

William Evans

William Evans or Will Evans may refer to:

Politicians and military

Sportsmen

Kilowatt hour

The kilowatt hour (symbol kWh, kW·h, or kW h) is a derived unit of energy equal to 3.6 megajoules. If the energy is being transmitted or used at a constant rate (power) over a period of time, the total energy in kilowatt-hours is the product of the power in kilowatts and the time in hours. The kilowatt-hour is commonly used as a billing unit for energy delivered to consumers by electric utilities.

Definition

The kilowatt-hour (symbolized kW⋅h) is a unit of energy equivalent to one kilowatt (1 kW) of power sustained for one hour.

One watt is equal to 1 J/s. One kilowatt-hour is 3.6 megajoules, which is the amount of energy converted if work is done at an average rate of one thousand watts for one hour.

Note that the international standard SI unit of energy is the joule. The hour is a unit of time "outside the SI", so the kilowatt-hour is a non-SI unit of energy. It is not listed among the non-SI units accepted by the BIPM for use with the SI.

Examples

An electric heater rated at 1000 watts (1 kilowatt), operating for one hour uses one kilowatt-hour (equivalent to 3.6 megajoules) of energy. A television rated at 100 watts operating for 10 hours continuously uses one kilowatt-hour. A 40-watt light bulb operating continuously for 25 hours uses one kilowatt-hour.

WH

WH, W.H., or wh may refer to:

Places

Wuhan, Hubei, China

Linguistics

Other uses

Five Ws

The Five Ws, Five Ws and one H, or the Six Ws are questions whose answers are considered basic in information-gathering. They are often mentioned in journalism (cf. news style), research, and police investigations. They constitute a formula for getting the complete story on a subject. According to the principle of the Five Ws, a report can only be considered complete if it answers these questions starting with an interrogative word:

Some authors add a sixth question, “how”, to the list, though "how" can also be covered by "what", "when", or "where":

Each question should have a factual answer — facts necessary to include for a report to be considered complete. Importantly, none of these questions can be answered with a simple "yes" or "no".

In the United Kingdom (excluding Scotland), the Five Ws are used in Key Stage 2 and Key Stage 3 lessons.

History

Rhetoric

This section focuses on the history of the series of questions as a way of formulating or analyzing rhetorical questions, and not the theory of circumstances in general.