Si se deja una cuchara metálica en una taza con agua caliente, después de unos minutos al tocar su extremo libre se percibe caliente.
Según el efecto que se produce en la cuchara, el calor es

Many archeologists and anthropologists disagree with dr. thorne's view.  thorne strongly believes that what many calls "homo erectus"  was in fact  homo sapiens,  and that they migrated out of africa almost 2 million years ago and dispersed throughout europe and asia. that's way different  from what scientists have always believed about the evolution of the species.

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