Today, we wanted to make sure the Physics 1 students at ETH Zurich don't get frustrated with to many complicated theories, but actually realize how much fun experimental physics can be. Therefore, we surprised them with some ice cream freshly made with liquid nitrogen after today's lecture.
After producing ice cream for roughly 400 students we got to enjoy some for ourselves and since they were investigating electrostatics in the lecture today, we got to play with the experiments in the lecture hall too.