Tent scene on Mount Guajara, 8903 feet high by Charles Piazzi Smyth https://www.rawpixel.com/image/14321137/tent-scene-mount-guajara-8903-feet-high-charles-piazzi-smythFree Image from public domain licenseCaptain Cook's Statue by New South Wales Government Printing Office https://www.rawpixel.com/image/14322058/captain-cooks-statue-new-south-wales-government-printing-officeFree Image from public domain licenseTent scene on Mount Guajara, 8903 feet high by Charles Piazzi Smyth https://www.rawpixel.com/image/14316218/tent-scene-mount-guajara-8903-feet-high-charles-piazzi-smythFree Image from public domain licensePrivate party on summit of Mount Monadnock by Jotham A French https://www.rawpixel.com/image/14275240/private-party-summit-mount-monadnock-jotham-frenchFree Image from public domain licenseAstronomy: two rococo allegorical compositions about the art and sciences, and on the stars. Engraving. https://www.rawpixel.com/image/14001915/image-stars-paper-cartoonFree Image from public domain licenseNederlands stel met telescoop en pijp (1740 - 1864) by anonymous https://www.rawpixel.com/image/13773666/nederlands-stel-met-telescoop-pijp-1740-1864-anonymousFree Image from public domain licenseMeasurement: a scholar making observations of a pendulum, with two servants, one writing at a table. Engraving by J. Basire… https://www.rawpixel.com/image/13998824/image-cartoon-person-booksFree Image from public domain licenseOil Spill Prevention, Control, Countermeasure (SPCC) ag secondary containment facility in Jefferson County, MT. 2013.… https://www.rawpixel.com/image/3335821/free-photo-image-air-aircraft-airplaneFree Image from public domain licenseRAWS at NIFC. The Remote Automatic Weather Stations located at the National Interagency Fire Center in Boise, Idaho. Photo… https://www.rawpixel.com/image/8754159/photo-image-public-domainFree Image from public domain licenseFive people looking through various types of spectacles.. Colour lithograph by F.S. Delpech after L.L. Boilly. https://www.rawpixel.com/image/13982875/image-cartoon-face-personFree Image from public domain licenseMr. Gray's School, Westminster: the interior. Lithograph by J. Miller. https://www.rawpixel.com/image/13991559/mr-grays-school-westminster-the-interior-lithograph-millerFree Image from public domain licenseTule Lake, Camp South, from the Signal Station, Tule Lake in the distance. by Eadweard J Muybridge https://www.rawpixel.com/image/14297689/photo-image-public-domain-nature-lakeFree Image from public domain licenseAstronomy: an astronomer in his study, looking out of the window with a telescope. Engraving by C. Grignion after S. Wale. https://www.rawpixel.com/image/13987406/image-stars-person-booksFree Image from public domain licenseAlta Vista Observatory, from the northern lava ridge by Charles Piazzi Smyth https://www.rawpixel.com/image/14319888/alta-vista-observatory-from-the-northern-lava-ridge-charles-piazzi-smythFree Image from public domain licenseAn old man wearing spectacles and his four pupils experiment using optical instruments and materials. Line engraving by F.… https://www.rawpixel.com/image/14014370/image-cartoon-person-artFree Image from public domain licenseJean Sylvain Bailly, Mayor of Paris, with his mistress, both represented as chickens. Etching, 1791. https://www.rawpixel.com/image/13984686/image-paper-cartoon-faceFree Image from public domain licenseSignal Tower on Elk Mountain, Maryland, overlooking battlefield of Antietam by Timothy H O Sullivan and Alexander Gardner https://www.rawpixel.com/image/14326186/image-plant-person-woodFree Image from public domain licenseLondon, seen from beside Flamsteed House in Greenwich park. Lithograph by T. S. Boys after himself, 1842. https://www.rawpixel.com/image/14003538/image-frame-plant-personFree Image from public domain license[Untitled photo, possibly related to: Shasta Dam, Shasta County, California. Dumping load of dirt which has been excavated… https://www.rawpixel.com/image/12151305/image-art-sky-vintageFree Image from public domain licenseKing George I representing royalty, a bishop representing episcopacy; and a judge representing law, all as seen through a… https://www.rawpixel.com/image/13985904/image-cartoon-person-moonFree Image from public domain license"Lalande", Statue by Jean-Joseph Perraud, Decoration of the Louvre, Paris by Édouard Baldus https://www.rawpixel.com/image/14324322/image-face-person-artFree Image from public domain licenseSecond mate of yacht observing radiation thermometers on Mount Guajara by Charles Piazzi Smyth https://www.rawpixel.com/image/14319762/image-face-hand-personFree Image from public domain licenseEpidaure, restauration & description des principaux monuments du sanctuaire d'Asclépios / relevés et restaurations par… https://www.rawpixel.com/image/14010677/image-pattern-circle-public-domainFree Image from public domain licenseOptics: a telescopic microscope, and hand-lenses. Aquatint, 1787 [by R. Laurie after Milne ]. https://www.rawpixel.com/image/14019709/image-paper-hand-public-domainFree Image from public domain licenseA Day's Deerstalking: Now for it. Here Goes. Slap, Bang by Ronald Ruthven Leslie Melville https://www.rawpixel.com/image/14321897/image-face-people-grassFree Image from public domain licenseAstronomy: a large refracting telescope, and projection of the transit of Venus. Wood engraving. https://www.rawpixel.com/image/14021664/image-cartoon-person-artFree Image from public domain licenseMEDITERRANEAN SEA (Oct. 27, 2018) The Arleigh Burke-class guided-missile destroyer USS Carney (DDG 64) transits the… https://www.rawpixel.com/image/3399332/free-photo-image-architecture-banister-battleshipFree Image from public domain licenseThe workshop of the spectacle maker and examples of his craft. Line engraving by ÆB. https://www.rawpixel.com/image/14002223/image-cartoon-person-airplaneFree Image from public domain licenseThree men looking through telescopes at young women bathing in the sea. Wood engraving. https://www.rawpixel.com/image/14003617/image-dog-horse-cartoonFree Image from public domain licenseSecond mate of yacht observing radiation thermometers on Mount Guajara by Charles Piazzi Smyth https://www.rawpixel.com/image/14315249/image-hand-person-artFree Image from public domain licenseGreenwich, with people in the foreground, London in the distance. Photo-lithograph by Dawsons after H. Dawson. https://www.rawpixel.com/image/14013738/image-dog-cloud-horseFree Image from public domain licenseSpotprent op de Hollanders (nr. 2), 1795 / 1814 (1814) by anonymous, Vallardi and anonymous https://www.rawpixel.com/image/13783417/image-paper-cartoon-faceFree Image from public domain licensePhiladelphia, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3289686/free-photo-image-antenna-architecture-buildingFree Image from public domain licenseA barber's shop in which men demonstrate the sense of sight. Etching by W. Peeters after C. de Wael. https://www.rawpixel.com/image/13993290/image-dog-cartoon-personFree Image from public domain licenseAn optical experiment using a giant lens to reflect sun-rays to create fire, with optical instruments scattered and… https://www.rawpixel.com/image/13998202/image-cartoon-person-artFree Image from public domain licenseAstronomy: an observatory telescope, with an astronomer recording the transit of Venus. Engraving by James Basire. https://www.rawpixel.com/image/13991658/image-cartoon-people-artFree Image from public domain licenseLifeguard station on the sand beach beneath black clouds at Santa Monica. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3290028/free-photo-image-antenna-building-cc0Free Image from public domain licenseA man is looking out of the window through a telescope as young children play on a rocking horse. Etching. https://www.rawpixel.com/image/13986765/image-dog-angel-horseFree Image from public domain licenseGalileo Galilei. Line engraving by P. Bettelini after T. Minardi after D. Cresti, il Passignano, 1624. https://www.rawpixel.com/image/14015516/image-face-person-artFree Image from public domain licenseGalileo Galilei (1564-1642) holding a telescope. Oil painting after Justus Sustermans. https://www.rawpixel.com/image/14000887/image-face-hand-personFree Image from public domain licenseThe saucer-like facade of a sports arena against blue sky. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3289439/free-photo-image-amphitheater-amphitheatre-antennaFree Image from public domain licenseSheepshanks telescope first erected on Mount Guajara, the Peak of Teneriffe in the distance by Charles Piazzi Smyth https://www.rawpixel.com/image/14314313/image-person-art-clothingFree Image from public domain licenseThe Telescope Gallery. by London Stereoscopic and Photographic Company https://www.rawpixel.com/image/14294422/the-telescope-gallery-london-stereoscopic-and-photographic-companyFree Image from public domain licenseAstronomy: telescopic and photographic equipment, with a device for projecting the shadow of the moon. Wood engraving, 1875. https://www.rawpixel.com/image/13983076/image-cartoon-shadow-personFree Image from public domain licenseThose Beastly Hinds Again! by Ronald Ruthven Leslie Melville https://www.rawpixel.com/image/14323485/those-beastly-hinds-again-ronald-ruthven-leslie-melvilleFree Image from public domain licenseIt costs a dime to look through this Bausch and Lomb high power telescope at beautiful New England, Savoy Mountains area… https://www.rawpixel.com/image/12287188/photo-image-face-person-artFree Image from public domain licenseIt costs a dime to look through this Bausch and Lomb high power telescope at beautiful New England, Savoy Mountains area… https://www.rawpixel.com/image/12286895/photo-image-face-person-technologyFree Image from public domain license[Untitled photo, possibly related to: Fort Worth, Texas. Meacham Field. Students learning operation of parachute]. Sourced… https://www.rawpixel.com/image/12271190/photo-image-person-sky-airplaneFree Image from public domain license