Bell Labs Wave Machine: Mismatched Impedance
Bell Labs Wave Machine: Mismatched Impedance
Two segments of the Bell Labs apparatus are connected. The segments have different impedance. When a pulse travels from high impedance to low impedance, it is reflected with positive polarity and transmitted with positive polarity. When a pulse travels from low ...
Bell Labs Wave Machine: Standing Waves
Bell Labs Wave Machine: Standing Waves
Standing waves are created on the Bell Labs apparatus. The apparatus is "open" at both ends, therefore the number of nodes is equal to the number of overtones. For example, the fourth harmonic will have four nodes, the fifth harmonic will have five nodes, etc.
Bell Labs Wave Machine: Superposition
Bell Labs Wave Machine: Superposition
A single pulse creates two waves of one-half amplitude. When the waves pass each other they add constructively to create the original pulse.
Bell Labs Wave Machine: Reflection
Bell Labs Wave Machine: Reflection
Pulses are created on the Bell Labs apparatus and reflections from the opposite end are observed. Initially, the ends of the apparatus are left open and the reflections have positive polarity. When one end is fixed, reflections have negative polarity.
TrashTrack
TrashTrack
Winner of the NSF International Science & Engineering Visualization Challenge, the video shows how TrashTrack uses technology to expose the challenges of waste management and sustainability. For more information go to: http://senseable.mit.edu/trashtrack/index.php
Technology Day 1995 - "War, Technology, Peace and Change"
Technology Day 1995 - "War, Technology, Peace and Change"
MIT's 1995 Technology Day takes place on June 16, 1995 on the theme "War, Technology, Peace and Change." A fly-by of six vintage World War II airplanes led by a B-25, intended as a tribute to the sacrifices of MIT community members in wartime service, concludes the ...
Technology Day 1997 - "Technology At Play: The World of ...
Technology Day 1997 - "Technology At Play: The World of Sports, Games and ...
MIT's 1997 Technology Day takes place on June 7, 1997 on the theme "Technology At Play: The World of Sports, Games and Toys." Speakers include Stephen C. Jacobsen ME '73, "On the Design and Manufacture of Some Interesting Machines;" Seymour A. Papert, "A New Look at ...
Technology Day 1998 - "Creating Wealth: Knowledge, Skills, ...
Technology Day 1998 - "Creating Wealth: Knowledge, Skills, Capital, ...
MIT's 1998 Technology Day takes place on June 6, 1998 on the theme "Creating Wealth: Knowledge, Skills, Capital, Resources." Featured speakers include Tony K. Tan PH '64, "Creating Wealth: A National Perspective;" Judith C. Lewent GM '72, "Building National Wealth ...
Technology Day 1994 - "For the Wonder of it All: The Arts ...
Technology Day 1994 - "For the Wonder of it All: The Arts at MIT"
MIT's Technology Day 1994 titled "For the the Wonder of it All: the Arts at MIT" takes place on June 3, 1994, and features the following presentations: Philip Morrison on "Art and Science;" I. M. Pei '40 and William Mitchell on "I. M. Pei Recent Work;" Richard Polich ...
Online News — Public Sphere or Echo Chamber?
MIT Communications Forum: Online News — Public Sphere or Echo Chamber?
Two panelists debate whether journalism in a digital age amounts to feast or famine, and differ on even basic questions.
Pulling a Cloth From Under a Beaker
Pulling a Cloth From Under a Beaker
A beaker is placed on top of a cloth, on top of a stool. The cloth is pulled quickly from underneath the beaker, while the beaker remains stationary. The impulse of the net force is made very small by reducing the time over which the cloth acts on the beaker. In other words, the force of the ...
The Growth of Cryptography
The Growth of Cryptography
02/08/2011 4:00 PM 10"250Ronald L. Rivest, Andrew and Erna Viterbi Professor Department of Electrical Engineering and Computer Science (EECS)Description: It's not every day that Euclid appears in public with "Alice and Bob," but in a lecture spanning a few thousand years, Ronald Rivest ...
Loop the Loop
Loop the Loop
A ball rolls down an inclined track and around a vertical circle. All of the ball's initial potential energy is converted into three forms of energy when it reaches the top of the loop: potential energy corresponding to the height of the loop, kinetic energy corresponding to the ball's ...
"Camp Technology" (1936)
"Camp Technology" (1936)
This vintage film from 1936 shows the daily routines of work (and play) at MIT's surveying camp for civil engineering students. It was known affectionately as "Camp Technology" and for years was held at a site on the shores of Gardner Lake near East Machias, Maine. MIT Museum Collections. ...
The Eye Robot
The Eye Robot
The Eye Robot was developed by members of the CAVS Vision Group, a part of the Art, Culture and Technology program, for a theatrical production with producer and director Robert Wilson. The Eye Robot serves as a mediator between seeing and unseeing. It can interact with its surroundings, ...
Plate Sliding Under a Soda Can
Plate Sliding Under a Soda Can
A can is placed on top of a metal sheet on a stool. A broom hits the sheet causing it to fly from underneath the can, while the can remains stationary. The impulse of the net force is made very small by reducing the time over which the metal sheet acts on the can. In other words, the force of ...
Michelson Interferometer
Michelson Interferometer
In this setup, an interferometer is used to measure the wavelength of laser light. The incident beam is split into two paths, recombined, and projected on a screen. When one of the path lengths is varied, the interference pattern on the screen changes. By measuring the distance that a path ...
Perceptive Mobile Robots Working Safely Alongside Humans
Perceptive Mobile Robots Working Safely Alongside Humans
12/07/2010 4:00 PM 4"237Seth Teller, Prof. EECSDescription: Although we are still far from the moment of singularity, or even Star Wars 'droids, we can anticipate robot colleagues in the near future, believes Seth Teller. He is developing 'situationally aware' ...
Wooden Block Between Two Strings
Wooden Block Between Two Strings
A block of wood is attached vertically between two strings. When the bottom string is pulled slowly, the top string breaks. When the bottom string is pulled quickly, it itself breaks.