Editing 1824 in science (section)

==Technology==
* October 21 – [[Patent]] issued to [[Joseph Aspdin]] for [[Portland cement]].<ref>British Patent 5022, ''An Improvement in the Mode of Producing an Artificial Stone''.</ref>
* [[Nicolas Léonard Sadi Carnot|Sadi Carnot]] scientifically analyzes the [[Energy conversion efficiency|efficiency]] of [[steam engine]]s and [[heat engine]]s in general in his book ''[[Reflections on the Motive Power of Fire]] and on Machines Fitted to Develop that Power'' ("Réflexions sur la puissance motrice du feu et sur les machines propres à développer cette puissance").
* [[Louis Braille]], at age 15, develops the six-dot code, later known as [[Braille]], which allows the [[Visual impairment|visually impaired]] to read and write faster than previous [[Tactile alphabet|raised-letter systems]].
* The [[Panoramagram]] is invented as the first stereoscopic viewer.