He constructed a soundproof, lightproof chamber that housed a small animal; a lever was placed within the animal's reach, which triggered a primary reinforcer.
They are completely lightproof, gastight, recyclable and a special lacquer on the inside avoids undesired reactions between the wine and the aluminum can.
Anchor is recycling its lightproof plastic bottles into plastic bins, which can be used to recycle paper and cardboard in schools, rather than sending all three products to landfill.
At its most basic construction, it's a lightproof container (as small as a matchbox or as large as a truck), with photo paper or film inside and a hole.
