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  2. John Frederic Daniell - Wikipedia

    en.wikipedia.org/wiki/John_Frederic_Daniell

    His name is best known for his invention of the Daniell cell, [2] an element of an electric battery much better than voltaic cells. He also invented the dew-point hygrometer known by his name, [ 3 ] and a register pyrometer ; [ 4 ] and in 1830 he erected in the hall of the Royal Society a water- barometer , with which he carried out a large ...

  3. Free Fire (video game) - Wikipedia

    en.wikipedia.org/wiki/Free_Fire_(video_game)

    Free Fire Max is an enhanced version of Free Fire that was released in 2021. [ 71 ] [ 72 ] It features improved High-Definition graphics , sound effects , and a 360-degree rotatable lobby. Players can use the same account to play both Free Fire Max and Free Fire , and in-game purchases, costumes, and items are synced between the two games. [ 73 ]

  4. List of inventors - Wikipedia

    en.wikipedia.org/wiki/List_of_inventors

    Claude Shannon (1916–2016), founder of information theory and modern cryptography, invented Minivac 601, and co-invented the first wearable computer (with Edward O. Thorp) Ugo Cerletti (1877–1963), together with Lucio Bini (1908–1964), Italy – Electroconvulsive therapy; Leona Chalmers (c. 1937), U.S. – modern menstrual cup

  5. Hygrometer - Wikipedia

    en.wikipedia.org/wiki/Hygrometer

    A hygrometer is an instrument which measures the humidity of air or some other gas: that is, how much of it is water vapor. [1] Humidity measurement instruments usually rely on measurements of some other quantities, such as temperature, pressure, mass, and mechanical or electrical changes in a substance as moisture is absorbed.

  6. Timeline of electrical and electronic engineering - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_electrical_and...

    German scientist Johann Philipp Reis invented the microphone. 1862: Scottish physicist James Clerk Maxwell published the four equations bearing his name. 1866: The Transatlantic telegraph cable: 1873: Belgian engineer Zenobe Gramme who developed the DC generator accidentally discovered that a DC generator also works as a DC motor during an ...

  7. Chris Messina (inventor) - Wikipedia

    en.wikipedia.org/wiki/Chris_Messina_(inventor)

    Although Twitter's initial response to Messina's proposed use of hashtags was negative, stating that "these things are for nerds" [5] a series of events, including the devastating fire in San Diego County later that year, saw the first widespread use of #sandiegofire to allow users to easily track updates about the fire. The use of hashtags ...

  8. List of National Inventors Hall of Fame inductees - Wikipedia

    en.wikipedia.org/wiki/List_of_National_Inventors...

    Display of inductees in the National Inventors Hall of Fame in Alexandria. The National Inventors Hall of Fame is an American not-for-profit organization, founded in 1973, which recognizes individual engineers and inventors who hold a U.S. patent of significant technology.

  9. Meteorological instrumentation - Wikipedia

    en.wikipedia.org/wiki/Meteorological_instrumentation

    A hygrometer measures the relative humidity at a location, which can then be used to compute the dew point. Radiosondes directly measure most of these quantities, except for wind, which is determined by tracking the radiosonde signal with an antenna or theodolite.