Science this - page 54
I have a pencil
science and ideas, battery rod, brushed, brushless, burn, capacitor, carbon, charge, circuit, crystal, crystalize, current, dc motor, design, diamond, discharge, electricity, electroboom, electronics, explode, explosion, graphene, graphite, heat, layout, mehdi, melt, motor, pcb, printed circuit board, sadaghdar, static, supercap, temperature, trace, voltage, weld, zap, science technology, science circuit