It is a very useful equipment in diving. In addition to allowing to inspect holes in low light, it reproduces the colors that were lost with the depth (Module 8 – Physics). Of course, it is indispensable to dive at night.
These lanterns are similar to the lanterns used on the surface, with the difference of being watertight, even at the high pressures to which they are subjected.
At the end of the dive, after washing the equipment, it is important to open the flashlight and remove the batteries or batteries. The condition of the batteries should be monitored frequently, not only to avoid damage to the flashlight, but also so that the charge does not be missing during a dive.