This sounds frustrating, but I'm a bit concerned how hostile you seem towards a foster child.
I think you're going to need to enlist the help of some psychiatrists, councillors, doctors, etc. that particularly specialize in childhood development. I think trying to get a kid with severe ADHD to "shut the hell up" is not the right approach and could have some very negative consequences in terms of their development and could even backfire in terms of acquiring the social skills you wish for them to have.
You can't actually "see" DNA itself because it is smaller than the wavelength of light. Those groves are 50nm and the wavelength of blue light is about 480nm.
You essentially stick some special molecules on the DNA that absorb light in one frequency and then they emit light in another frequency. So you blast the molecules with light of one frequency and then use a dichroic mirror to filter that light out and you only see the emissions and thus you see where the DNA is, but you don't "see" the DNA itself.
Like STM itself what we mean when we "see" something at those length scales is interesting. Scanning Tunnelling Microscopy is like a blind man reading braille - not really "seeing" anything but getting enough info to describe the picture.
source: I used to work in the same lab as Dan. Hi Dan!
I think you're going to need to enlist the help of some psychiatrists, councillors, doctors, etc. that particularly specialize in childhood development. I think trying to get a kid with severe ADHD to "shut the hell up" is not the right approach and could have some very negative consequences in terms of their development and could even backfire in terms of acquiring the social skills you wish for them to have.