A dark silhouette of a large cloud obscures the setting sun. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3294364/free-photo-image-pattern-adventure-cc0Free Image from public domain licenseThe bones in the joint of an elbow, viewed through x-ray. Photoprint from radiograph after Sir Arthur Schuster, 1896. https://www.rawpixel.com/image/13971058/photo-image-background-shadow-personFree Image from public domain licenseRöntgenopname van een kind (1917) by Otto Hildebrand, Wilhelm Scholz, Julius Menno Wieting Pascha and Joseph Friedrich… https://www.rawpixel.com/image/13758497/photo-image-person-art-public-domainFree Image from public domain licenseRespiratory tract infection shown on x-ray due to coronavirus https://www.rawpixel.com/image/2312834/free-photo-image-coronavirus-air-awarenessView licenseReciprocal aid. American nurses and officers enjoy themselves in nurses' quarters of a new 3,000,000 dollar hospital… https://www.rawpixel.com/image/12308687/image-face-person-bookFree Image from public domain licenseMorning sun breaking through the trees in Yosemite National Park. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3293097/free-photo-image-abies-apparel-california-picturesFree Image from public domain licenseThe fracture and dislocation of bones in an elbow joint, viewed through x-ray. Photoprint from radiograph after Sir Arthur… https://www.rawpixel.com/image/13989728/photo-image-public-domain-brushFree Image from public domain licenseIridescent rainbow blue prism light flare on black background https://www.rawpixel.com/image/5569954/photo-image-aesthetic-light-shadowView licenseA woman on the beach taking a photo on her smartphone during golden hour. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3292339/free-photo-image-yellow-picture-human-camera-cc0Free Image from public domain licenseA snake in the process of swallowing a small mammal, probably a mouse, viewed through x-ray. Photoprint from radiograph… https://www.rawpixel.com/image/13986612/photo-image-art-pattern-animalFree Image from public domain licenseU.S. Customs and Border Protection officer Alan Syto prepares a line of trucks for non-intrusive inspections x-rays outside… https://www.rawpixel.com/image/8739124/photo-image-border-public-domain-personFree Image from public domain licenseOuchy, Lausanne, Switzerland. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3289428/free-photo-image-cc0-ocean-mountain-adventure-brown-backgroundFree Image from public domain licenseAmoy (Xiamen), Fukien province, China: two young men and a young woman. Photograph by John Thomson, 1871. https://www.rawpixel.com/image/14000409/photo-image-face-frame-personFree Image from public domain licenseAnatomy: a dissection of the thorax showing the pleural cavity and lung, viewed from the left. Photograph, ca. 1900. https://www.rawpixel.com/image/13992027/photo-image-art-animal-public-domainFree Image from public domain licenseAn x-ray technician's hand, mutilated with dermatitis, after habitual work with x-ray apparatus at the Royal London… https://www.rawpixel.com/image/13983883/photo-image-hand-person-hospitalFree Image from public domain licenseManta ray animal white background wildlife. AI generated Image by rawpixel. https://www.rawpixel.com/image/12630834/manta-ray-animal-white-background-wildlife-generated-image-rawpixelView licenseNakhon Thom [Angkor Wat], Cambodia. Photograph by John Thomson, 1866. https://www.rawpixel.com/image/13983199/nakhon-thom-angkor-wat-cambodia-photograph-john-thomson-1866Free Image from public domain licensePeking, Pechili province, China: a Mongol tent. Photograph by John Thomson, 1871. https://www.rawpixel.com/image/13989866/photo-image-face-frame-personFree Image from public domain licensePeking, Pechili province, China: a mother with two children. Photograph by John Thomson, 1869. https://www.rawpixel.com/image/13972612/photo-image-face-frame-personFree Image from public domain licenseNeon lens flare prism rainbow light reflection on black background https://www.rawpixel.com/image/5510440/photo-image-aesthetic-light-blueView licenseSilhouette of San Francisco, United States https://www.rawpixel.com/image/430216/free-photo-image-america-american-cityView licenseTwin Peaks, San Francisco, United States https://www.rawpixel.com/image/430128/free-photo-image-sunrise-skyline-america-americanView licenseBusinessman working with the nature. https://www.rawpixel.com/image/76395/premium-photo-image-business-person-businessmanView license[Untitled photo, possibly related to: Gold miner operating pneumatic drill at Mogollon, New Mexico] by Russell Lee https://www.rawpixel.com/image/12150927/image-person-art-vintageFree Image from public domain licenseBlue lens flare effect on a black background wallpaper https://www.rawpixel.com/image/2408827/free-photo-image-abstract-background-beamView licenseBlue lens flare effect on a black background wallpaper https://www.rawpixel.com/image/2408819/free-photo-image-explosion-abstract-backgroundView licenseMrs. M.C. Ray from Mangum, Louisiana. Wife of construction worker at Camp Livingston who had been farming but came out here… https://www.rawpixel.com/image/12333147/image-dog-face-peopleFree Image from public domain licenseAttic Black-Figure Hydria Fragment (comprised of 10 Joined Fragments) https://www.rawpixel.com/image/14269835/attic-black-figure-hydria-fragment-comprised-joined-fragmentsFree Image from public domain licenseAttic Black-Figure Neck Amphora Fragment (part of 81.AE.200.39.1) https://www.rawpixel.com/image/14327399/attic-black-figure-neck-amphora-fragment-part-81ae200391Free Image from public domain licenseCanton, Kwangtung province, China. Photograph by John Thomson, 1869. https://www.rawpixel.com/image/13982754/canton-kwangtung-province-china-photograph-john-thomson-1869Free Image from public domain licenseNeon lens flare green light reflection on black background https://www.rawpixel.com/image/5511620/photo-image-background-aesthetic-lightView licenseNakhon Thom [Angkor Wat], Cambodia. Photograph by John Thomson, 1866. https://www.rawpixel.com/image/14002883/nakhon-thom-angkor-wat-cambodia-photograph-john-thomson-1866Free Image from public domain licenseGray metallic box in a dark room with light rays https://www.rawpixel.com/image/5569843/gray-metallic-box-dark-room-with-light-raysView licenseThe bones of an elbow joint, viewed through x-ray. Photoprint from radiograph after Sir Arthur Schuster, 1896. https://www.rawpixel.com/image/13985816/photo-image-person-public-domain-drawingFree Image from public domain licenseThomas Ray, Robert Norman, 4 months (circa 1900) by David James Aldersley. https://www.rawpixel.com/image/13030413/thomas-ray-robert-norman-months-circa-1900-david-james-aldersleyFree Image from public domain licenseA foetal cord with a figure of eight knot in it. Photograph, 1892. https://www.rawpixel.com/image/13984588/foetal-cord-with-figure-eight-knot-it-photograph-1892Free Image from public domain licenseKiel, Germany (June 18, 2016) Secretary of the Navy Ray Mabus speaks with crewmembers aboard the USS Mount Whitney (LCC20)… https://www.rawpixel.com/image/3398794/free-photo-image-accessory-apparel-cc0Free Image from public domain licenseThe bones of a forearm, viewed through x-ray. Photoprint from radiograph after Sir Arthur Schuster, 1896. https://www.rawpixel.com/image/13981721/photo-image-hand-shadow-personFree Image from public domain licenseAttic Black-Figure Eye Cup Fragments by Group of Walters 48 42 and Krokotos Painter https://www.rawpixel.com/image/14270486/photo-image-hand-trophy-patternFree Image from public domain licenseBlue lens flare effect on a black background wallpaper https://www.rawpixel.com/image/2408788/free-photo-image-abstract-background-beamView licenseColumbia Steel Company at Geneva, Utah. An electric arc welder helping in the construction of a new steel mill which will… https://www.rawpixel.com/image/12339437/image-person-art-public-domainFree Image from public domain licenseAnatomy: a dissection of the abdomen showing the abdominal cavity. Photograph, ca. 1900. https://www.rawpixel.com/image/13975475/photo-image-person-art-public-domainFree Image from public domain licenseTakow (Takao, Kaohsiung), Formosa [Taiwan]. Photograph by John Thomson, 1871. https://www.rawpixel.com/image/13998025/takow-takao-kaohsiung-formosa-taiwan-photograph-john-thomson-1871Free Image from public domain license