air door

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air door, 2009 ; transparent PVC ; Ø 330 cm

air door(croquis)

bing-bang

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bing-bang, 2009 ; photogram ; 24 x 30 cm

In 90 seconds the light travels more than 5 billion times 5 meters.
Here, it created a black point on the photo paper.

big-bang(dispositif)

Ex. big-bang

 1. Prepare a photo paper and a laser measurer in a dark room.

2. Define a distance between the photo paper on the wall and the laser measurer.

     (For example 5 meters)

3. Leave the laser beam of the device on for a while.

     (For example 90 seconds)

4. Calculate how many times the laser beam crosses the space of 5 meters

     between the device and the photo paper during the 90 seconds.

     Given that the light travels two hundred and ninety-nine million seven hundred

     ninety-two thousand four hundred and fifty eight meters per second,

the equation is :

                      x = ( 90(sec) * 299 792 458(m/sec) ) / 5(m)

big-bang(study), 2009 ; pencil on tracing paper ; 25.9 x 36.3 cm

big-bang(study), 2009 ; pencil on tracing paper ; 25.9 x 36.3 cm

mètre

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mètre, 2009 ; pencil on tracing paper ; 20.9 x 29.6 cm

vitesse

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vitesse(speed), 2009 ; pencil on paper ; 21 x 29.7 cm

room by second

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room by second, 2009 ; pencil on millimeter tracing paper ; 29.2 x 31.4 cm

 Ex. Conversion of a distance-space at distance-time

 1. Measure a room with a laser measurer.

 2. Convert the metric dimensions into times using the speed of light.

       t(sec) = d(m) / 299 792 458(m/sec)

 3. Propose its graphic conversion.

room by meter

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room by meter, 2009 ; pencil on millimeter tracing paper ; 29.2 x 31.4 cm

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