Platinum Wire in Glass Tube for Flame Testing Physics the slim half-disc geometry letting

the slim half-disc geometry letting beams enter the curved face along its radius for clean refraction-angle and TIR observations

this two-gap Wheatstone bridge is the standard student apparatus for resistance comparison and verification

constantan

Eight nickel-plated aluminum forks spanning C 256Hz to C 512Hz in a C-major scale

the broader lens capturing more page area while supporting general magnification for reading

Platinum Wire in Glass Tube for Flame Testing Physics the slim half-disc geometry lettingPlatinum flame test wire fused into a 5 inch borosilicate glass handle, preferred over iron or nichrome because it contributes no color of its own to the flame.