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Glass transparent disk on purple abstract background with iridescent effect, refraction of light crystal prism 3d render. Clear acrylic plate, round disc with rainbow lens flare, 3D illustration
Latina woman doctor by profession with an average age of 40 years dressed in a white coat and N95 mask is in her medical office performing a visual examination on her patient with state-of-the-art machines
Old simple spherical lens with one convex surface and other flat surface, so-called plano-convex lens in the metal frame on a gray background
ancient round iron shield isolated on white background
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300mm Semiconductor wafer disk isolated on black background. 3D rendering image.
Transparent prism for light / physics education experiments close up stock photo
3D rendering illustration of an HVAC jet nozzle diffuser
Roof from behind the water glass
Close up image of daylight shine through clear circular convex lens with refection and refraction of light and cast artistic oval shape of shadow.
Ontario, Canada.
A closeup of magnifying glass on a glass crystals on the table
Round Shield with Scratched Metal Texture. Isolated on White. 3D Illustration with Clipping Path.
Old brass telescope on white background.
hand holds one glass lens eyewear industry
Abstract Shiny Surface - White, Gray, Background
Black and white photographic image depicting overlapping image circles as a special symbol on a white background.
Closeup of glasses lenses, eyeglasses lenses in optical store
Close-up of dark colored digital coin with neon holographic effect on white background. 3d rendering illustration.
Antique telescope on a tripod at a beach facing window.
Broken glass on a compass or porthole on a wartime ship. Reflected, distorted and refracted light
Old lens mounted on camera.
Steel disc with concentric tracks resembling master disc for duplication of vinyl records. Abstract square black and white industrial, technological or scientific background with metaphorical relation to audio mastering / post-production.
An interior section of a UFO hidden from the public. Extraterrestrial high-tech vehicles have been visiting Earth for some time now. However, official institutions have not yet clarified this situation. 3D illustration depicting the exterior of a ufo with antigravity technology. / You can see the animation movie of this image from my iStock video portfolio. Video number: 1446464458
Very high resolution scan of dented, scratched and grooved metal surface.
Glowing decoration and rain outside the window
Free Images: "bestof:ReflectingTelescope 015.jpg Largest disk of optical glass created in the United States as of 1928 National Institute of Standards and Technology 9/1/1928"
Time & Frequency; Atomic Clocks (5881386915).jpg
Converting Digital Information into Braille (5883951271).jpg
Chemistry, calibrations, mercury emissions (5940996728).jpg
Cobia (7152180729).jpg
Metafilms; Sub-wavelength resonators (5884301049).jpg
Common Murres (5940478571).jpg
Near-field Antenna Measurements (5941062964).jpg
Advanced Measurement Laboratory; Nanofabrication Facility; Chip Ovens (5884870010).jpg
New PML Lab (7093349409).jpg
NRC (5888575550).jpg
Lab-on-a-Chip (5885283580).jpg
NIST Pins Down Imaging System for the Blind (5884515996).jpg
Error Correction (5884515900).jpg
Standards for Radiation Detection (5940488991).jpg
Concrete Strength Testing (5888202462).jpg
NIST Nobel Laureate Explains (5941059340).jpg
Laser Tracker (5940486369).jpg
Hawksbill Sea Turtle (7454788426).jpg
Transition Edge X-ray Sensor (5884305363).jpg
NIST Antenna Calibrations Extended to 60-110 GHz (5941062520).jpg
Tissue Engineering; Biomaterials for the Heart (5881107872).jpg
Coordinate Measuring Machine (5940440685).jpg
Ultrafast Photon Detector (5881388183).jpg
New Instrument Tests the Metal of WTC Steel (5940503481).jpg
Iron-based and Copper-Oxide High-Temperature Superconductors (5884302103).jpg
Identifying Automotive Emissions (5941045842).jpg
New Accreditation Program for Body Armor Testing Laboratories (5941061708).jpg
Multi-layered Mirror (5881388485).jpg
Calibrating Infrared Detectors (5881382145).jpg
NIST engineer Kate Remley (6052872100).jpg
Advanced Measurement Laboratory; Night View (5941021430).jpg
Homeland Security; World Trade Center; Steel Fireproofing (5941047642).jpg
Cloud Computing (6648686983).jpg
Forensic DNA Analysis (5881109656).jpg
MACS, Multi-Axis Crystal Spectrometer (5888574314).jpg
Kilogram (blue) (5940489901).jpg
Kilogram (gold) (5941049018).jpg
Digital Fingerprint Scanner (6648687021).jpg
New Imaging Tool is Boon to Fuel Cell Research (5880686731).jpg
John Hagedorn (5884514054).jpg
Bringing Polymer Patterns into Focus (5940988602).jpg
Standard Reference Materials Preparation (5941085050).jpg
Real-time Quality Control for Welding (5884928619).jpg
AFM 2 (5940986486).jpg
David_Addington_Stands_Alone_in_the_United_States_Naval_Observatory.jpg
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David_Addington_Reads_His_Blackberry_under_Arbor_at_the_United_States_Naval_Observatory.jpg
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Vice_President_Cheney_Talks_with_David_Addington_in_His_Senate_Office_at_the_United_States_Capitol.jpg
Vice_President_Cheney_Talks_with_David_Addington_Aboard_Air_Force_Two_En_Route_to_the_United_States.jpg
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Vice_President_Cheney_with_David_Addington_at_the_United_States_Embassy_in_Tokyo,_Japan.jpg
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Vice_President_Cheney_Talks_with_David_Addington_in_His_Senate_Office_at_the_United_States_Capitol.jpg
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