The shattered glass and rubbley beach sand whipped up at my bare legs so hard it had tore my flesh. Hurricane force winds had stirred up these earthen micro bullets and sent them careening so hard ...
Light can be focused by conventional far-field optics to a spot that is limited by diffraction to ∼0.5 λ/NA where λ is the wavelength and NA is the numerical aperture of the lens. The near-field ...
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