The back clipping plane determines the cutoff point for rendering polygons. Here we're setting it to 5000. This value will vary depending on your coordinate system.

And they found that the plants that bounce back after clipping boost their DNA content-some of their cells go from having 10 chromosomes to having 320.

Going back to the clipping diodes now, the diodes have no effect until the signal at the output is greater than the threshold voltage of the diode.