Changing Channels:
Slow Scanning Waves of Perception

Playing the Electromagnetic Radiation Spectrum


Changing Channels

This presentation will examine the Electromagnetic Spectrum, a scientific chart used to understand the relationship between different types of energy waves, and how it can be used as an instrument to explore and expand upon media based art practices. I will specifically discuss how Slow Scan Television, an early telecommunications technology is an example of how the manipulation of energy waves can act as a metaphor to explore ones constructs of perception and relationship within the world.

- interest in observing, experiencing the environment that I am in
- independant research


Media art

- thinking about media based art works and how they utilize energy in different ways
- how do they function

Dieter Daniels talks about the relationship between visual waves and sound waves only being related through human perception.

"Let us not be deceived by the media technology of the universal machine: image and sound are completely separate physical phenomena. Sound wave are vibrations in the air, which is why airless outer space is so silent. Light is our name for the small proportion of the electromagnetic spectrum that is visible to man. The full range of the spectrum ranges from kitchen microwaves to long wave radio transmitters. Put loosely: these phenomena are as alien to each other as a horse and a motorbike.
There is only one place in the world where light and sound affect each other mutually in a way that goes well beyond any technology or physics: in human perception. This is where the synaesthesia of sound and vision comes into being. It becomes an artistic experience, a state of audio-visual 1 intoxication and almost religious ecstasy..."

Slow Scan Television

- the relationship between the devices and how they communicate

Slow Scan Television (SSTV) is a system designed for sending still television pictures over an audio channel. This is achieved by slowing down the scan rates and the number of frames sent so that an unmodified amateur transmitter and receiver can be used.

The best way to understand slow scan TV is to imagine it as colour fax pictures but sent over the radio rather than the phone. The pictures are transmitted via tones (1200-2300 HRZ) over the air.

Telecom History Project: OUTERSPACE

- early telecommunications art, security cameras

Bill Bartlett Slow Scan Video

Electromagnetic Radiation Spectrum

The EMRS is a pedagogical tool used to illustrate the relationship between radiation waves

The Maxwellians

Google Image Search

EMRS poster

playing the EMS

Playing the Electromagnetic Spectrum.

What exactly does that entail?

Chemosynthesis / Photosynthesis