In this video, Mike machines a 0.6 mm watch screw on a watchmaker's lathe.

Learn What the Distance is Between the Earth and Moon with the planet song What's the Distance Between the Earth and Moon Song by

This video is answering the question of what is a melody.

This music composition lesson follows on from an earlier video about the rule of the octave and you may well want to watch our other video first. In this lesson we examine the linear implications for part writing using the chord scheme...

Here's an idea for writing a sequence based on using a chain of suspensions above a descending scale in the bass line. Descending scales in the bass can be awkward to harmonise satisfactorily without generating parallels. This pattern...

This music composition lesson demonstrates an idea for alternating inversions and an associated melodic pattern above an ascending scale in the bass line. Ascending scales in the bass can be awkward to harmonise satisfactorily without...

Learn how to harmonise a chromatic scale. Starting with harmonising diatonic scales, the video moves on to using secondary dominants then to using chromatic chords and to using chords in a less functional way. This music theory lesson...

An idea for elaborating an upper melodic line over an ascending scale in the bass line. Ascending scales in the bass can be awkward to harmonise satisfactorily without generating parallels. This pattern illustrates one way of handling...

We explore one idea for harmonising a descending scale in the bass line. Many people find it easier to harmonise an ascending scale than a descending scale and most people find it easier to harmonise a scale at the top of the texture...

An apocalyptic asteroid is on a collision course with our wonderful little planet! What do we do?

We investigate how the internet could be taken down, the consequences of an Internet Apocalypse, and if it could all be done by a single person.

Today we are going to write a harmony using mostly seventh chords and we will look at a strategy to deal with non-chord notes when we are writing music. This combines a couple of our past lessons so be sure you watched those videos...

Identifying music intervals can be one of the more confusing things about learning music theory for the first time. In this video we will look at an easier way to find the names of intervals using the major scale as a reference point....

Sometimes you need to have two different music parts to be playing at the same time in the same staff. Or, you might want to save space by having two voices share a staff. One of the best ways to achieve this is to use the voices feature...

In this lesson we will go over three more complex versions of the seventh chord - minor, augmented, and diminished. We will go over the different scale degrees used in the chords and how to build them. We will look at examples of each...

Watch this Human Body Size Comparison Heart Size Comparison

Princeton University physicist Paul Steinhardt reveals how irrational ratios of two repeating patterns produces intriguing and unexpected effects.

Princeton cosmologist Paul Steinhardt recalls his initial enchantment with cosmic inflation when he first heard Alan Guth suggest it in a talk in 1982.

2003 Nobel Laureate Antony Leggett, University of Illinois, describes his belief that reductionistic approaches to physics are not always the right way to proceed, describing how the possible breakdown of the laws of quantum mechanics...

Cosmologist Paul Steinhardt (Princeton) describes the so-called "initial conditions problem" that makes cosmic inflation very hard to start.

Imperial College cosmologist Claudia de Rham describes her view of how reinterpreting Einstein's theory of gravity in terms of particle physics gives a more coherent and elegant picture of the forces of nature.

Physicist Paul Steinhardt, Princeton University, describes how his interest in inflationary cosmology was piqued by a captivating talk given by Alan Guth 30 years ago, and how what he thought was going to be a few weeks' diversion has...

Cosmologist Rocky Kolb (Chicago) provides a brief background on the mystery of dark energy while explaining why the phenomenon is personally bothering him.

Former Harvard and Stanford psychologist Stephen Kosslyn describes his excitement at becoming Founding Dean of Minerva Schools.