How light bulb is made

What is a bulb? what is bupb The filament is made out of a fine wire that's wound around a metal bar called a mandrel to mould it into its coiled shape It's then heated to soften the wire what is lp number Click here:point_up_2:to get an answer to your question :writing_hand:what is the function of the bulb in a thermometer

what is just play app Joseph Swan, alongside Thomas Edison, is the person most credited with the invention of the light bulb The Sunderland-born chemist created the