Physics Demonstration Loudspeaker Subcategory_Globes this natural gas Bunsen burner

this natural gas Bunsen burner mounts on an extended anti-tip cast-iron base

Hand-painted animal cell model reveals organelle structures

Uniform walls provide excellent strength against breakage

Hand-painted 4-part human brain model separates into cortical hemispheres and brain-stem regions for lobed-anatomy teaching at introductory biology levels

covering core dispersion and refraction shapes for ray-box optics work

Physics Demonstration Loudspeaker Subcategory_Globes this natural gas Bunsen burnerMoving coil 4 ohm driver in a frame that orients vertically or horizontally, with 4mm sockets that connect directly to signal generators and other audio sources for sound wave demonstrations.