Perfectly packaged: Cross-sections of the empty phi29 prohead (left) and fully assembled virus (right) filled with DNA. A molecular motor (not shown) transports the DNA (red) into the prohead through ...

No extant maker's markings. Two circular field coils, 5" in diameter, are affixed to a wooden base with two metal straps. The field coils stand vertically with a coil armature rotating between them on ...

Discover how to build a magnetic repulsion motor capable of lighting LED bulbs using only magnets and basic components. This step-by-step tutorial covers the construction of the magnetic base, the ...