Optical tunneling is demonstrated by frustrated total internal reflection.
When a magnetic field is applied perpendicular to the direction of flow of charge carriers, in a semiconductor material, charge
Cadmium selenide (CdSe) quantum dots are chemically synthesized in the diameter ranges of 2 to 6 nm. These colloidal solutions
A neon lamp is placed inside a spectral tube holder and the emission spectrum is observed with a fiber optics
With a helium-neon laser, we can demonstrate the diffraction of light from a single slit, double slit pattern or from
X-rays are produced when inner shell transitions take place inside atoms. This demonstration uses an X-ray tube, X-ray
J.J. Thomson discovered the electron in 1897, while working with cathode ray tubes. We can scavenge a tube from an
Some interesting and informative demonstrations are prepared as a useful teaching tool to explain the idea of energy quantization. One