| It is entirely erroneous to say all calefaction is from solar rays directly. |
|
| Coal-oil-fired generators and atomic energy plants cause large amounts of waste heat which is carried away as hot water and cause thermal pollution or calefaction. |
|
| Such ecological alterations as have been observed as a result of the local calefaction of the river to date appear to be relatively inconsequential. |
|
| Since late 2009, we study the case of calefaction of liquid oxygen droplets. |
|
| The first one is a device using calefaction, which gives to the drops a high mobility without any preferential direction. |
|
| This system allows to change the substrate material. On the figure opposite, we see a drop of liquid nitrogen in calefaction over a bath of water. |
|
