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  2. Energy conservation - Wikipedia

    en.wikipedia.org/wiki/Energy_conservation

    Energy subsidies are the chief barrier to conservation in the Gulf. Residential electricity prices can be a tenth of U.S. rates. [52] As a result, increased tariff revenues from gas, electricity, and water sales would encourage investment in natural gas exploration and production and generation capacity, helping to alleviate future shortages.

  3. International English Language Testing System - Wikipedia

    en.wikipedia.org/wiki/International_English...

    International English Language Testing System (IELTS / ˈ aɪ. ɛ l t s /) [6] is an international standardized test of English language proficiency for non-native English language speakers. It is jointly managed by the British Council, IDP and Cambridge English, [6] and was established in 1989. IELTS is one of the major English-language tests ...

  4. James while John had had had had had had had had had had had ...

    en.wikipedia.org/wiki/James_while_John_had_had...

    The sentence can be given as a grammatical puzzle [7] [8] [9] or an item on a test, [1] [2] for which one must find the proper punctuation to give it meaning. Hans Reichenbach used a similar sentence ("John where Jack had...") in his 1947 book Elements of Symbolic Logic as an exercise for the reader, to illustrate the different levels of language, namely object language and metalanguage.

  5. Lemon battery - Wikipedia

    en.wikipedia.org/wiki/Lemon_battery

    Zinc and copper electrodes are reasonably safe and easy to obtain. Other metals such as lead, iron, magnesium, etc., can be studied as well; they yield different voltages than the zinc/copper pair. In particular, magnesium/copper electrodes can generate voltages as large as 1.6 V in lemon cells.

  6. Electricity - Wikipedia

    en.wikipedia.org/wiki/Electricity

    Electricity is a very convenient way to transfer energy, and it has been adapted to a huge, and growing, number of uses. [75] The invention of a practical incandescent light bulb in the 1870s led to lighting becoming one of the first publicly available applications of electrical power.

  7. English grammar - Wikipedia

    en.wikipedia.org/wiki/English_grammar

    The first published English grammar was a Pamphlet for Grammar of 1586, written by William Bullokar with the stated goal of demonstrating that English was just as rule-based as Latin. Bullokar's grammar was faithfully modeled on William Lily's Latin grammar, Rudimenta Grammatices (1534), used in English schools at that time, having been ...

  8. English as a second or foreign language - Wikipedia

    en.wikipedia.org/wiki/English_as_a_second_or...

    It provides a stress-free environment for learners and makes them more responsible. Computers can provide help to ESL learners in many different ways such as teaching students to learn a new language. The computer can be used to test students about the language they already learn. It can assist them in practicing certain tasks.

  9. Wireless power transfer - Wikipedia

    en.wikipedia.org/wiki/Wireless_power_transfer

    A concise explanation of these phenomena would come from the 1860s Maxwell's equations [28] by James Clerk Maxwell, establishing a theory that unified electricity and magnetism to electromagnetism, predicting the existence of electromagnetic waves as the "wireless" carrier of electromagnetic energy.

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