“…The optical setup used for this work differs in two ways from conventional shadowgraphy methods for droplet size and velocity measurements. The first is the use of a fast-pulsed single LED as a light source, thus providing short and precise light pulses without using expensive lasers [30][31][32][33][34]. The second is the replacement of high speed cameras [32,35] with a standard CCV camera, decreasing substantially the costs with the only drawback of a longer sampling time.…”