Zinked and anodized screws.
Zinked and anodized screws.
Zinked and anodized screws frame.
Anodized steel vertical bars with unfocused background
Fluidized Bed Reactor connected to an anode, cathode and reference electrode. Laboratory experiment.
zinc electrowinning workshop closeup
Fluidized Bed Reactor with Purple Phototrophic Bacteria.
vacuum tube
Power block.
Background made of various alkaline and lithium-ion batteries, positive pole visible.
vacuum tube
Close up picture of filaments
Two old vacuum tubes
lamp on the white background
Background made of various alkaline and lithium-ion batteries, positive pole visible.
Rechargeable battery on blue background. Selective focus negative terminals of rechargeable battery
Used Dead Batteries - Hazardous Waste
Rechargeable battery on blue background. Positive and negative terminals of rechargeable batteries.
vacuum tube
zinc electrowinning workshop
zinc electrowinning workshop
vacuum tube
Avionics details.
Old vacuum tube
lamp on the white background
Used Dead Batteries - Hazardous Waste
Two researchers working with Fluidized Bed Reactors in a laboratory.
Vacuum electronic lamp with bulbs. Vintage large vacuum tube that lights up from her desk in lab
Background made of various alkaline and lithium-ion batteries, positive pole visible.
Background made of various alkaline and lithium-ion batteries, positive pole visible.
