The geophysical activities at the Atmospheric Ionization Laboratory in Cambridge, Massachusetts. People walk into the Atmospheric Ionization Laboratory. A sign reads ' Atmospheric Ionization Laboratory'. A woman writes on a blackboard. A man stands near a large wall map of the world and points out the locations. A radar antenna. A man with a special camera and he is seated on a platform. A man works with radar antenna. Another man writes data on the blackboard. which is received from radar stations.
The geophysical activities at the Atmospheric Ionization Laboratory in Cambridge, Massachusetts. Several views of laboratory instruments in operation which help in conducting research. The men operates research equipment. A man operates an instrument used to study the atmospheric dielectric behavior of an ionized gas. A scientist checks the air temperature, density. A convection vacuum apparatus. A man operates a recorder and automatic reduction system. A decoder and automatic electronic typewriter. Another man studies the upper atmospheric pressure and temperature.
The geophysical activities at the Atmospheric Ionization Laboratory in Cambridge, Massachusetts. The men operate research equipment. A man operates telegraph recorder. A man and a woman study an instrument designed to check the small fluctuations in atmospheric pressure. A woman writes the speed of the air on a paper. A water table and a man operates it. Another man measures amplitude signal. A man studies a graph used to record earth motion for scientific study. A man puts the graph in a wooden box and is attached with parachute. A radio carrier signal.
The geophysical activities at the Atmospheric Ionization Laboratory in Cambridge, Massachusetts. Men at the laboratory operate different instruments. Views of research on the ionosphere in the laboratory. A scientist conducts a research and uses various apparatus. A model of U.S. B-29 Superfortress on top of a table with a portable laboratory. Personnel in a research laboratory as they operate an equipment. He operates electron microscope and performs experiments. A man at a blackboard as he works out mathematical problems.
View from a high point, possibly a building, of sailors in training at Great Lakes Naval Station, near North Chicago, in Lake County, Illinois, in World War 1. They march from closed three column abreast formation into a spread formation for calisthenics. They follow a leader in performing exercises. Closeup of the exercise leader in action on a platform. About 20 sailors running a race, as others watch from sidelines. Teams of sailors playing a type of race passing a basketball under their legs. Large group of sailors boxing in pairs. Two sailors in a boxing match, encircled by other sailors, and refereed by a Marine officer in shirtsleeves. Change of location to Key West, Florida. Brief glimpse of U.S. marines in military combat maneuvers at a sandy area. As they move forward, an explosive charge ignites nearby.
A man driving a 1917 Ford model T roadster along a severely rutted mud-filled street. A 1917 Ford Model T, one ton truck, trapped in mud. Frustrated driver gets out and kicks a rear tire. Road building crews at work with horse-drawn equipment. Road construction with large steam powered machinery. A 1917 model T roadster driving along a new smooth concrete road. Women making purchases at a sidewalk stand and placing them into their Ford Model T sedan. A doctor arrives at house of a patient, in a Ford Model T roadster. Americans driving Ford Model T cars in the National Parks circa 1920s. Cars driving past a giant redwood tree. Man in a Ford Model T stopped beside woods and feeding a bear in a National Park, as a Park Ranger stands nearby. Ford Model T driving through the tunnel cut in the "Wawona" giant sequoia tree, in the Mariposa Grove of Giant Sequoias at Yosemite National Park. A 1918 Ford Model T touring car parked at a picnic site, with family sitting at picnic table nearby. Families with Ford Model T cars, engaged in outdoor activities, picnicking, and gathering wild flowers. Two men making their Model T into a shelter for overnight camping. Family picnicking at a beach; their Model T parked on road above. A man in a 1920s era swim suit carries a basket for a picnic to others in his family seated near rocks. 1920s or 1930s boy and girl children playing on a beach; picking up seaweed; and wading in the surf, near large rocks.
CRITICALPAST.COM: About Us | Contact Us | FAQs - How to Order | License Agreement | My Account | My Lightboxes | Shopping Cart | Advanced Search | Featured Collections | Website Terms & Conditions | Privacy Policy ©2026 CriticalPast LLC.
License Agreement |
Terms & Conditions |
Privacy Policy
©2026 CriticalPast LLC.