The “greenhouse effect” can work for good — with a lack of heat in the spring or cold summer days, and evil — when the bright summer sun brings the temperature in the greenhouse to levels that even heat-loving tomatoes and cucumbers do not stand up and die. This does not happen, when at any moment you can lift the transom and reduce thereby the temperature in the greenhouse. Well, what about those owners of the garden plots, which come to the country at best once a week?
Offer gardeners a simple, environmentally friendly device for self-regulation of temperature in the greenhouse. From the known similar devices, it differs in that it does not require an external source of energy (except, of course, the sun), and a working body in it is normal air.