Template:Are You Sure/April 7: Difference between revisions

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• ... that today is '''[[Abuse of notation (nonfiction)|National Abuse of Notation Day]]''' in the United States, and that while Canada does not have an official Abuse of Notation Day, the phrase "Every Day is Abuse of Notation Day" is often attributed to the mathematician-comedians of [[New Minneapolis, Canada]] ?
• ... that April 7 is '''[[Abuse of notation (nonfiction)|National Abuse of Notation Day]]''' in the United States; and that while Canada does not have an official Abuse of Notation Day, the phrase "Every Day is Abuse of Notation Day" is often attributed to the mathematician-comedians of New Minneapolis, Canada?


• ... that physicist '''[[Ernst Ruhmer (nonfiction)|Ernst Ruhmer]]''' investigated practical applications making use of the light-sensitivity properties of selenium, which he employed in developing wireless telephony using line-of-sight optical transmission, sound-on-film audio recording, and television transmission over wires?
• ... that computer scientist '''[[Donald Sarason (nonfiction)|Donald Sarason]]''' pioneered the abstract treatment of contractive containment and established a fruitful connection between the spaces Hb and the ranges of certain Toeplitz operators?


• ... that computer scientist '''[[Donald Sarason (nonfiction)|Donald Sarason]]''' pioneered the abstract treatment of contractive containment and established a fruitful connection between the spaces Hb and the ranges of certain Toeplitz operators?
• ... that astronomer, mathematician, and philosopher '''[[Hasan Tahsini (nonfiction)|Hasan Tahsini]]''' (7 April 1811 – 3 July 1881) was first rector of the newly established Istanbul University, where he gave lectures on physics, astronomy and psychology; that in one experiment, Tahsini placed a pigeon underneath a glass bell and emptied the receptacle, suffocating the pigeon; that conservatives considered Tahsini's experiment as evidence of witchcraft; and that Tahsini was declared a heretic through a fatwa, dismissed from the university, and forbidden to give lectures?
 
• ... that physicist and academic '''[[Pieter Rijke (nonfiction)|Petrus Leonardus Rijke]]''' (11 July 1812 – 7 April 1899) explored the physics of electricity, and is known for the Rijke tube, which turns heat into sound by creating a self-amplifying standing wave?

Latest revision as of 03:03, 8 April 2022

• ... that April 7 is National Abuse of Notation Day in the United States; and that while Canada does not have an official Abuse of Notation Day, the phrase "Every Day is Abuse of Notation Day" is often attributed to the mathematician-comedians of New Minneapolis, Canada?

• ... that computer scientist Donald Sarason pioneered the abstract treatment of contractive containment and established a fruitful connection between the spaces Hb and the ranges of certain Toeplitz operators?

• ... that astronomer, mathematician, and philosopher Hasan Tahsini (7 April 1811 – 3 July 1881) was first rector of the newly established Istanbul University, where he gave lectures on physics, astronomy and psychology; that in one experiment, Tahsini placed a pigeon underneath a glass bell and emptied the receptacle, suffocating the pigeon; that conservatives considered Tahsini's experiment as evidence of witchcraft; and that Tahsini was declared a heretic through a fatwa, dismissed from the university, and forbidden to give lectures?

• ... that physicist and academic Petrus Leonardus Rijke (11 July 1812 – 7 April 1899) explored the physics of electricity, and is known for the Rijke tube, which turns heat into sound by creating a self-amplifying standing wave?

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