[Physicist]

or lasers (how many of us don't need glasses thanks to the surgical use of lasers?).

I've said this before on FR: the most relevant question ever asked in the field of eye health is "how do ammonia molecules behave when you wiggle them with microwaves?"

Others may have different opinions about that, of course.

[RadioAstronomer]

I've said this before on FR: the most relevant question ever asked in the field of eye health is "how do ammonia molecules behave when you wiggle them with microwaves?"

Indeed. Lead to the invention of the laser. :-)