Technology / Home Audio / Diaphragm: The part of a speaker driver that moves, producing the sound. Each diaphragm is directly connected to a voice coil. The diaphragm for a woofer is a cone, while for a tweeter, it's often a dome.
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Iris Diaphragm

Entertainment / Photography / Iris Diaphragm: Continuously adjustable lens aperture consisting of interposed metal leaves. MORE

Diaphragm Shutter

Entertainment / Photography / Diaphragm Shutter: Between the lens camera shutter that performs the function of the iris diaphragm. MORE

Burst Diaphragm

Technology / Rockets / Burst Diaphragm: A thin (metal) disc which fails at a known pressure, releasing pressurant, fuel or oxidizer into flow lines. MORE