His bike’s hub dynamo offered interesting possibilities — not only does it provide AC power, but its output frequency is proportional to the bike’s speed. This allows him to derive speed ...

the wheel specialists at DT Swiss have created the 350 SP PL-7 dynamo hub and two affordable pre-built aluminum Gravel Dynamo wheels. Whether you are looking for inexhaustible power to light up ...

One more reason for companies to join UMass Lowell’s mission to expand the city’s high-tech footprint into a regional ...