Dalton and the atoms Listen John Dalton was a happy man. He had always wanted to teach, although in the 18th century, this was somewhat unusual for someone from his social status. He was born as the son of a weaver who owned a small piece of land, and like many children of his era, John had to work from the very early age. However, he finally had made it: Since a couple of years, or, to be more precise, since the year 1793, he finally had a position as a lecturer of Mathematics and Natural Philosophy in the New Col-lege of Manchester
as his family called him, received his first science book at the age of ten, he was hooked; nevertheless, he still had to keep working at the farm chores. He was very studious and managed to obtain university scholarships. Throughout his university days in New Zealand, he studied and invented high-frequency electrical circuits and worked with radio waves. After he graduated with his Master’s degree, he looked for a [...] , he decided that without a good job, they could not afford to get married. Failing to get a job, he went back to his parents’ farm to help with the work. ...
Joule and energy Listen The formulation of the mechanical equivalent of heat can be taken as a crucial step towards the formulation of the principle of energy conservation. Joule demonstrated in a series of experiments that mechanical work (which he still called 'mechanical force') can be converted at a constant ratio into heat. Story n° 1. This story adresses the necessity of careful experimenting in the process of generating new scientific knowledge. The hard work of experimenting: James Prescott Joule and the mechanical
Creative Listen Creativeness in sciences is evident for those who practice science, however, for those who do not, science appears to be either unflexible and acting according to some rules that can neither be understood nor questioned, or to be a work that has no place for individual approaches or competences. This misperception is problematic [...] . Two stories, which stress different aspects of the scientific work, will provide insight into Joule's set of experiments by which he determined the ratio of heat and mechanical work. Joule und