The capture method is unusual: the flies must be alive and whole so they are caught by hand using humans as bait.

BBC: Burkina Faso: Beating river blindness by fly-catching

Indeed even the latest digital camera relies on the separation method to capture light.

BBC: Pioneering colour photography

In addition to this method of capture, you will need a light gauze net .

FORBES: On Nature

So doctors decided to try a method called boron neutron capture therapy.

BBC: Surgery

"The film shows that no single method was necessarily responsible for solving the manhunt, nor can any single scene taken in isolation fairly capture the totality of efforts the film dramatizes, " they said.

NPR: Director Defends 'Zero Dark Thirty' Torture Scenes