There is a man standing in front of a clock with a long beard

a steampunk invention presentation, an old professor with a beard explaining a perpetual motion machine on a podium, crowd of people, (best quality,4k,8k,highres,masterpiece:1.2),ultra-detailed,(realistic,photorealistic,photo-realistic:1.37),intricate mechanical device,steampunk style,victorian era,scientific demonstration,detailed gears and mechanisms,brass and copper materials,dimly lit room,dramatic lighting,moody atmosphere,amazed audience,vintage laboratory equipment,aged wood and metal textures