Vellekoop, I. M., Lagendijk, A. & Mosk, A. P. Exploiting disorder for perfect focusing.
And then, a magic moment: The instant the last horse is loaded, there will be a split second of perfect, focused silence.
These differences in traveltimes of waves coming from different directions distort the perfect focusing and, if sufficiently strong, may even shift the main focusing point away from antipode.
2D single molecule experiments were conducted on a Nikon Eclipse Ti microscope equipped with a 100× oil-immersion objective lens (Nikon, N.A. = 1.4), a lumencor light source, two filter wheels (Lambda 10-3, Sutter Instrument, Novato, CA), perfect focusing systems, and EMCCD (iXon3, Andor, UK).
If the condition of a small NA is fulfilled, the convergent beam is allowed to contain a wavefront deviating from a parabola, e.g., a non-perfect focusing beam.
Perfect Focus System was activated to maintain the focus position.
The cool blue auto-focus assistance lamp ensures perfect focus even in dim light.
Images were acquired with the Perfect Focus 3 system engaged to minimize temperature drift.
The ballet's men — Jared Angle as the lead, his brother Tyler and Sean Suozzi as his companions — are already in perfect focus.
Livingstone explained, "A baby's eyes start out farsighted and, as they develop, gradually change shape to achieve perfect focus.
