# Timing: Part 2 - The Birth Of Video Recording

The peculiarities of the motion of planet Earth are responsible for much more than seasons and the midnight sun and it took a while before it was all figured out.

Fig.1 - The equation of time has two Fourier components. The first a) has a period of one year and is due to the non-circular orbit. The second b) has a period of six months and is due to the inclination of the polar axis. The sum of a) and b) is c).

Fig.2 - Seen from the sun, the Earth’s axis appears square to the ecliptic at the solstices, but leans over 23 degrees at the equinoxes. The component of the Earth's rotation in the ecliptic is reduced at the equinoxes so the sun’s apparent speed with respect to lines of longitude is reduced.

Fig.3 - On the left, the quadrant of the earth from equator to pole was defined as ten million meters. The intention was to divide it into 100 grads, each of which was one hundred centigrads, corresponding to a distance of 1km. The idea wasn’t popular and instead the quadrant on the right was divided into 90 degrees, each of which contained 60 seconds of arc. One arc-second corresponds to a nautical mile, which became the standard navigational unit.

# The Sponsors Perspective: PRISM Waveform Monitors: Form Is Temporary, But Class Is Permanent?

In the beginning, there was television. And whenever people tried to make television programmes effective video signal monitoring was an essential pre-requisite.

# Digital Audio: Part 12 - Sampling Rate Conversion

In real systems the issue of sampling rate conversion arises frequently but fortunately there are plenty of solutions.

# Microphones: Part 2 - Design Principles

Successful microphones have been built working on a number of different principles. Those ideas will be looked at here.

# Timing: Part 3 - Early Synchronization

Synchronizing became extremely important with the growth of AC power systems, which ended up being used to synchronize all sorts of equipment, from Radar to television.

# Essential Guide: Cloud Microservice Workflow Design

The power and flexibility of cloud computing is being felt by broadcasters throughout the world. Scaling delivers incredible resource and the levels of resilience available from international public cloud vendors is truly eye watering. It’s difficult to see how a…