Sorry, no photos from #IOP#Women In #Physics event today, I was massively busy and you've got to be really careful taking photos when <18 students are involved, but here's the alt-text:
Metal plate, about 1m diameter, with ~500 seemingly random holes drilled in it. (Sloan sky survey filter)
A series of students experiencing an epiphany as they hand a strong magnet and aluminium tube down the line, experiencing Lenz's law
Puzzlement at polarised film blocking phone screen light as you turn it