one man hermann von helmholtz kept me from leaving my studies, he did not praise my theory, but offeredhysics laboratory. he said that he sees in me a scientific streak and now your brother is again elated and passionate about experiments. a new promising direction that we are working on here is the diffusion of gases in this future. work in the direction of gases is both very promising and very risky. remember the experiments of the young teacher. how many explosions accompanied the discovery of the laughing gas nitrous oxide, and how many we do not know gases when heated distillation under pressure can behave unpredictably. you're taking a big risk, plus your eyesight and sorry absent-mindedness, multiplied by your perseverance. i ask you please be careful. never heard of a practice session. we don’t have such people, only if the students are already experimenting with experimenters, in addition to discovering the phenomenon of electromagnetic induction, he managed to convert some types of gases into a liquid state, at the beginning he received liquid chlorine, then all the rest, but