212 results found for physics

A short video explaining how transistors work.  At the heart of our high-tech society with radios, mobile phones, computers and space exploration are tiny electronic components called transistors.  They have revolutionised electronics and in the pr....

An elegantly simple optical diffraction demonstration with an inexpensive laser pointer is used to show the way in which x-rays can reveal the structure of crystals, and in particular, the double helix structure of DNA.

Sound is produced in the larynx; filtering it in the vocal tract produces formants and phonemes. The acoustics, mechanics and some neurobiology of hearing. Pitch perception.

This short documentary explains why the Large Hadron Collider was built and what scientists are using the collider to look for.

30-minute lecture about the physics of hyperfine interactions, and about how to calculate hyperfine interactions by the WIEN2k DFT code

Looking at how hard disk drives can be improvedn

Searching for the mysterious magnetic monopole.

Superposing waves with different frequencies gives beats and Tartini tones. Removing beats gives consonance. Tuning consonances gives temperament.

A look at what was known when Newton started to develop his theory of gravitation and how he used these ideas and data to make his great forward step

Ivar Giaever won the Nobel Prize in 1973 for his investigations of tunneling in semiconductors and superconductors. Giaever worked on metal thin films and tunneling and took a Solid State physics course. Although he knew nothing about Superconductivi....

The simple Balmer spectrum of atomic hydrogen has provided the Rosetta stone for deciphering the strange laws of quantum physics during the early 20th century.  Four decades ago, Doppler-free laser spectroscopy opened a new chapter in the exploratio....