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1st century AD: The aeolipile, a simple steam turbine is recorded by Hero of Alexandria. [263] 1st century AD: The first use of respiratory protective equipment is documented by Pliny the Elder ( c. 23 AD –79) using animal bladder skins to protect workers in Roman mines from red lead oxide dust.
चित्र:Tekari Maharaj Mitrajeet Singh, 1763 - 1840 AD.JPG भाषाएँ जोड़ें पृष्ठ की सामग्री दूसरी भाषाओं में उपलब्ध नहीं है।
History of Europe. The history of Europe is traditionally divided into four time periods: prehistoric Europe (prior to about 800 BC), classical antiquity (800 BC to AD 500), the Middle Ages (AD 500–1500), and the modern era (since AD 1500). The first early European modern humans appear in the fossil record about 48,000 years ago, during the ...
Descripción Rupee, 1840 - British India, Victoria.jpg. Русский: Монета 1 рупия, 1840 год - Британская Индия, Ост-Индийская компания, королева Виктория. Серебро 917 пробы, диаметр 30.5 мм, вес 11.55 гр. Монетный двор города ...
13 mai: Alphonse Daudet, nuvelist și romancier francez (d. 1897) 2 iunie: Thomas Hardy, scriitor englez (d. 1928) 7 iunie: Charlotte a Belgiei, soția împăratului Maximilian I al Mexicului (d. 1927) 24 iunie: Avram Goldfaden, poet, dramaturg și actor rus de origine evreiască (d. 1908) 30 septembrie: Johan Svendsen, compozitor norvegian (d ...
3 January – The Melbourne newspaper The Herald is founded by George Cavenagh as The Port Phillip Herald. 13 January – The Battle of Yering occurs between Indigenous Australians of the Wurundjeri nation and the Border Police. March – Between 40 and 60 Jardwadjali Aboriginal people are killed in the Fighting Hills massacre.
The AD–AS or aggregate demand–aggregate supply model (also known as the aggregate supply–aggregate demand or AS–AD model) is a widely used macroeconomic model that explains short-run and long-run economic changes through the relationship of aggregate demand (AD) and aggregate supply (AS) in a diagram. It coexists in an older and static ...
