site-specific installation
observation of thermal states through a stationary wave
Nov.6th - Nov.28th 2004 at Osaka Chikko Harbor Red Brick Warehouse in Osaka

concerning the system
6 x glass tubes (d:62mm l:1200mm) as observation spaces
4 x lights as heaters
6 x microphones + loudspeaker with 2 x 4ch custommade amplifiers as audio amplification
setting 4 x glass tubes in the normal thermal state and 2 x tubes in the heating state. catching the internal sound at one of the glass tubes and transmitting the sound to the next space. doing this procedure over and over. as a result, the natural resonance frequencies must be emphasized. in this case, 2 sets of resonances will rise from 2 kinds of thermal states. the difference between thermal states appears as beat

"observation of thermal states through a stationary wave"
In this work, I deal with thermal states, their distribution and equivalence, through wave/vibration phenomena of the air. This work might be a model for how thermal exchange as an event creates a displacement in space-time.
The motion of the compression wave that propagates in air follows the dynamics described by wave-equation formulas in physics. Basically, this dynamics requires several conditions, namely, a boundary condition of the observation space, the initial condition of the compression wave, and the propagation speed in the medium. In the case of air, the propagation speed is in proportion to the air temperature. As a result, when the space has certain boundaries, these conditions emphasize specific frequencies of air vibration. In terms of wave dynamics, this means that the resonance of the space is brought into relief by stationary waves.
In this work, I create several observational spaces by arranging fixed measurments (caliber, length and thickness) of glass pipes that are treated differently according to thermal conditions. For each of the spaces it is possible to consider that the boundary conditions are the same, namely, glass pipe as the primary matter and the internal measurments. When the spaces are characterized by even thermal distribution and temperature, resonances appear at identical frequencies. In contrast, this work sets in motion varying thermal states to each observational space. By affecting the temperature of each space through a difference in lighting--either natural or artificial--the propagation speeds in the different spaces vary. And the emphasized frequencies also differ in proportion to the temperature.
But let us also look at this from a different point of view, i.e. thermodynamics. The thermal agitation is a divergent phenomenon that reaches an equilibrium state of thermal distribution. In this sense, the spaces constantly exchange the thermal state amongst each other. The temperature which is generated by thermal agitation derives from molecular movements that are excited by light as electromagnetic waves. This is not an issue of motion dynamics in terms of individual molecular movement, but rather, an issue of statistical dynamics. Moreover, light equates with a kind of electromagnetic wave as a disposition of space-time itself which can propagate even through a vacuum. In a way, light is concerned with space-time itself which we generally regard as a criterion in distinguishing things. This view binds the vibration phenomena affected by thermodynamics to an issue of space-time.
Thus the displacement of a stationary wave that we find through this work is a statistical result of phenomena which is generated by light as a disposition of space-time. I hope this work will function as an opportunity to imagine a state
of space-time focused around light, temperature and vibration.


観測空間として6×ガラス管(径:62mm 長さ:1200mm)
加熱用照明として 4×500ワット