A fascinating look at the building of the irrigation tunnel that brought water into the arid Uncompahgre Valley in Colorado. President Theodore Roosevelt's interest in conservation and his interest in the National Reclamation Act of 1902...

The microscopes covered in depth at this site include the phase-contrast microscope, the electron microscope, and the scanning tunneling microscope. This site includes in-depth information on the microscopes, microscope simulators,...

This photo shows the entrance of an old train tunnel. Named the Sodani tunnel, it was part of the Kintetsu Osaka line in Japan.

This site offers an abstract from Van Nostrand's Eclectic Engineering Magazine from 1870 from a paper by John R. Gilliss. A comprehensive look at the tunnels built along the route of the Central Pacific Railroad and the Union Pacific...

This site offers an abstract from Van Nostrand's Eclectic Engineering Magazine from 1870 from a paper by John R. Gilliss. A comprehensive look at the tunnels built along the route of the Central Pacific Railroad and the Union Pacific...

Traffic Tunnel Administration Building (Boston)

Adam Clark Tunnel entrance (Budapest)

Underwater tunnel, Oceanografic (Valencia)

An image of the Union Canal Tunnel.

Wind tunnel at Langley Research Center.

Steel tank from a wind tunnel at Langley Research Center. (use source ).

Full-scale wind tunnel at Langley Research Center.

The first railroad tunnel in the United States. Regarded as an engineering marvel.

This is the oldest known full-size tunnel in the US. It was built in 1818-1819 by Montgomery Bell to divert water to provide industrial power. Manual drilling was arduous and performed by slaves using tools such as hammers, chisels, and...

This wind tunnel built in the 1950s allowed commercial and military aircraft as well as the Space Shuttle to be aerodynamically tested.

Investigate how precise measurments and effective communication skills are needed when engineering and digging a tunnel.

An animation of a scanning tunneling microscope, STM, image of a quantum stadium corral made of iron atoms on a copper surace.

In this activity, young scholars experiment with various objects in a wind tunnel. Together, they record predictions and data in a class data table. Students will then use the information gained in the experiment to draw conclusions...

With this resource, students will explore how the illusion of depth is created by artists on a flat surface. By examining both a still life and a landscape, students will learn about foreground, middleground, background, and overlapping...

Scroll down to research to find images of scanning tunneling and atomic force microscopes.

A wealth of well-organized information about computer-related health and ergonomics, such as proper posture, keyboard positioning, monitor placement, eye fatigue, and Carpal Tunnel Syndrome. Plenty of practical tips for creating a safe...

Gerd Binnig co-developed the scanning tunneling microscope (STM) with Heinrich Rohrer. The STM allowed scientists entry into the atomic world in a new way and was a major advance in the field of nanotechnology. For their achievement,...

Swiss physicist Heinrich Rohrer co-invented the scanning tunneling microscope (STM), a non-optical instrument that allows the observation of individual atoms in three dimensions, with Gerd Binnig. The achievement garnered the pair half...

An interactive series of labs describing some basic principles of Physics. The labs demonstrate different basic concepts of physics used in building and creating large structures such as bridges, domes, skyscrapers, dams, and tunnels.