3 ms·
Your math is a little off. Inverse square law means that every doubling in distance quarters the power, so it'd be .625W at 4 inches (or 1.111W at 3 inches).
by thedufer 12y ago
Your math is a little off. Inverse square law means that every doubling in distance quarters the power, so it'd be .625W at 4 inches (or 1.111W at 3 inches).