Black drop effect during the 1769 Transit of Venus Finish:Single Demand Thy Life

Demand Thy Life

Possibly the Val di Diano: a pencil reference verso 'page 171 p

Rebuilding work on the current bridge was completed in 1921

Lead singer Freddie Mercury performing on stage on his 38th birthday

Black drop effect during the 1769 Transit of Venus Finish:Single Demand Thy LifeViews of the teardrop effect observed during transit as Venus is near the solar edge. Four figures of the event seen by Hirst using a 2 foot long reflecting telescope to x55 magnification. Inscribed in ink above 'XI p. 229'. Not signed. The illustration corresponds to figures 5 8 on plate 10 and 11 of the published paper 'Account of several phaenomena observed during the Ingress of Venus into the solar disc' by William Hirst, Philosophical