Internal Gear and Pinion Drive Mechanical Demonstration Model Glass Bottles_Aspirator Bottles used to demonstrate standing waves

used to demonstrate standing waves in air through powder-pile node spacing measurements

Jointed Liebig condenser in borosilicate glass measures 16cm with 14/23 glass connectors for distillation and reflux procedures

hepatic artery

with alphanumeric position labels and a stacking design for organized molecular-biology workflows

this universal charger keeps portable instruments running between sessions without rotating in fresh disposable batteries

Internal Gear and Pinion Drive Mechanical Demonstration Model Glass Bottles_Aspirator Bottles used to demonstrate standing wavesHand cranked internal gear and pinion between two clear plastic plates, with dual rotation dials for quantitative analysis of gear ratios and rotary motion transmission.