It's freezing out there! 🥶 So why not freeze some water using a peltier thermoelectric device & watch the magnificent ice crystals forming & growing between linear polarisers 🌈 #birefringence #stress #thicknesss #icecrystals #techniciansmakeithappen

RT @RSC_EiC@twitter.com

Want to perfect your practical lessons?
Take this advice from @_misshrussell@twitter.com and Laura Scoular
https://edu.rsc.org/feature/nail-every-practical-lesson/4016563.article
#techniciansmakeithappen #ProbationerTeacher #TECHOGNITION @Preproom@twitter.com

🐦🔗: https://twitter.com/RSC_EiC/status/1600938513414950947