Science Matters Quarterly Newsletter (2019) Science Matters 2 (May) 2019 | Page 4

Science Teachers’ Assocation of NSW inc 2019–20 Calendar MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY The school theme for National Science Week in 2019 is “Destination Moon: more missions, more science”. 2019 is also the UN’s International Year of the Periodic Table of Chemical Elements, with the stated aim to enhance global awareness of, and to increase education in, the basic sciences. It marks the 150th anniversary of the table’s creation by Mendeleev and the 100th anniversary of the founding of IUPAC (International Union of Pure and Applied Chemistry). This calendar presents a selection of people and events that are linked to these two themes, showing the nature of science as an accumulation of combined knowledge from critical experimentation. Science history dates compiled by Sue Siwinski. 1965, Edward White, first US astronaut to make a spacewalk, spent 20 min outside Gemini 4 capsule during Earth orbit after the launch a few hours earlier on the same day. 3 1794, Joseph Priestley (discovered O2 1774), left England to pursue scientific studies in the US after his home and laboratory were set on fire because of his unpopular political opinions and support of the French Revolution. 4 5 1 6 1896 birth of Robert S Mulliken: developed the molecular-orbital theory of chemical bonding with Friedrich Hund, received 1966 Nobel Prize for fundamental work on chemical bonds & electronic structure of molecules. 7 1911 birth of Erwin Müller, German-US physicist, invented FIM (field emission microscope) and took the first images of individual atoms of tungsten 1951. 10 11 1905 death of Per Teodor Cleve, Swedish chemist and geologist who who discovered the elements holmium and thulium. 17 18 12 1 20 21 1960, chlorophyll “a” was first synthesised by Robert B Woodward in the US. The green pigment responsible for photosynthesis consists of 55 C atoms linked to 72 H atoms, 5 O atoms and 1 Mg atom. 25 1963 death of Seth B Nicholson, astronomer, known for discovering 4 satellites of Jupiter. He spent a life career at Mt.Wilson Observatory and in the early 1920s measured temperatures of the moon, planets, stars & sunspots. 2 1999 death of Charles Peter Conrad, US astronaut, who was the third man to walk on the moon during the Apollo 12 mission, 14-24 Nov, 1969. He also worked on Gemini and Skylab missions. 8 14 9 2 8 9 1754 birth of Juan D’Elhuyar, Spanish chemist, who separated tungsten metal from its wolframite ore in 1783, assisted by his younger brother. They became the first Basques in science history. 1846, Prince Albert laid the foundation stone for the College of Chemistry in London, providing a means for students to begin the systematic study of chemistry at moderate expense. 15 16 22 23 1965 birth of Yang Liwei, China’s first astronaut in his nation’s first manned spacecraft, Shenzhou 5. Launched Oct 2003, from the Gobi desert, the capsule completed 14 orbits & landed safely. 19 1975, moon tremors, caused by strikes of Taurid meteors, were detected on 22-26 by the seismometers left on the Moon’s surface by US astronauts. The Taurid meteor storm crosses the Earth orbit twice a year. 24 13 1933 birth of Viktor Patsayev, Soviet cosmonaut: flew on the Soyuz 11 mission, remained in space a record 24 days, docked with Salyut station, but all were killed by cabin depressurisation during the return to earth. SUNDAY 1812 death of Richard Kirwan, Irish chemist; wrote Elements of Mineralogy 1784, first English systematic treatment of the subject. President of Royal Irish Academy & Royal Dublin Society, he disputed Lavoisier’s discoveries. 26 27 3 4 1908, Kamerlingh Onnes made helium liquid at a temperature of 4.2K after working for many years to liquify this element which persisted as a gas to the lowest temperature. He received a Nobel Prize in 1913 for his low temperature work. 10 11 — 4 — 28 1687, Principia by Isaac Newton was published, with an insightful mathematical analysis of relationships between force, motion & time, as in inertial motion & acceleration. He also outlined motion of heavenly bodies. 1995, space shuttle Atlantis docked with Russian space station Mir on a mission that included exchange of Russian crew and studies of survival in space. For 5 days this spacecraft was the largest man-made satellite to orbit Earth. 29 1808, Humphry Davy announced the separation of elemental boron. But, working independently, Gay- Lussac had announced this 9 days earlier. 30 1914, first US patent issued to Robert Goddard who spent his lifetime working as a rocket scientist. 5 6 7 12 13 14