- Sections
- A. General Materials & Mathematics
- B. Statics
- C. Kinematics & Dynamics
- D. Rotational Mechanics
- E. Gravitation & Astronomy
- F. Fluid Mechanics
- G. Vibrations & Mechanical Waves
- H. Sound
- I. Thermodynamics
- J. Electrostatics & Magnetostatics
- K. Electromagnetic Principles
- L. Geometrical Optics
- M. Wave Optics
- N. Spectra & Color
- O. Vision
- P. Modern Physics
K8-51. Infrared Eye
Purpose
To demonstrate emission of infrared radiation from a hot source, and to show an application of the photoelectric effect.
Equipment
Infrared Eye with hot plate.
Setup Time
5 minutes.
Images
Description
The "Infrared Eye" uses an imaging tube to convert infrared radiation into a visible image. A hot plate◙provides a convenient source of infrared radiation which glows brightly when viewed with the naked eye. The imaging tube works by the photoelectric effect: infrared photons are absorbed on the front surface of the imaging tube, producing photoelectrons; the photoelectrons are accelerated to strike a fluorescent screen at the back of the tube, causing it to glow visibly. ◙This device is not sensitive enough to pick up heat from the human body, but easily sees the radiation emitted by the tra
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See pagesk1. forces on moving charges
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See pagesk2. electromagnetic induction
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See pagesk3. transformers
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See pagesk4. motors & generators
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See pagesk5. electrical properties of matter
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See pagesk6. electric circuits & instruments
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See pagesk7. rlc circuits
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See pagesk8. electromagnetic waves
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See pagesk1. forces on moving charges
-
See pagesk2. electromagnetic induction
-
See pagesk3. transformers
-
See pagesk4. motors & generators
-
See pagesk5. electrical properties of matter
-
See pagesk6. electric circuits & instruments
-
See pagesk7. rlc circuits
-
See pagesk8. electromagnetic waves