Solution experiment part 2

"We have the origin laser here," said Sam as she pointed each item on the laboratory table. "Where are your safety glasses?" she asked.
"Oh," said Mark as he fished a pair out from his lab pocket and put them on.
"Here we have a splitter, and we'll come back to that in a second." Mark nodded and made finger gestures on his phone. "Here one path of light goes to the double slit, which is just a photographic film with small circular pinholes," Sam said. "This is where the interference pattern should begin." She pointed a little further down the table at a wire mesh. "That's the mesh that we will line up with the interference pattern so that the darker parts of the interference pattern are blocked by the mesh. We can move it forward and backward to line it up with the dark fringes of an interference pattern."
Sam pointed at a long, crudely made track that both held the mesh stand in place and also allowed it to move up and down the table. "The mesh can also expand to cover more area and line up better with the pattern. This part here is a big lens that will collect the light and direct any patterns on the left side to the left and any light on the right side to the right." The big round lens distorted everything behind it so much that objects were unrecognisable through it.
"There are a bunch of mirrors and some other pieces in there but those just help move things around to make it easier to fit on this table. This part over here has two light receptors attached to sensors that record how many photons are received. The photons that went through the right slit should diffract, go to the right on the lens, then go into the right-side sensor to be counted. The other side should do the same thing on the other side."
"What happens when you turn it on?" Mark asked, continuing to make finger motions on his phone.
"We see a laser follow the pathways and a counter increasing on the screen."
"That's it?" Mark asked.
"That's it. Oh, and we take the other light that was taken from the splitter at the front and measure those photons too. The sum of the two sensors at the back of the experiment should match the count coming from the front of the experiment to find out if Ashfar is an idiot or not." Sam smiled.
"What about the interference pattern?"
"We take away the lens at first to align the mesh with the dark fringes. Then we add the lens, which gives us left-right determination. That proves that we are counting particles. The mesh stands in for the diffraction pattern in front of the lens."
"I think I understand," said Mark. "Ashfar is moving the interference pattern up front and claiming that the interference pattern waveform must exist in order to go around the mesh. But then he counts the photons in the collectors and claims that they are particles."
"That's the idea," said Sam. "Every time I do it, the experiment works. But that doesn't mean his conclusions are correct. Watch."
Samantha checked her glasses were on her face. She pointed at Mark to make sure his were on as well. She counted each piece of equipment on the table and then pushed a switch that turned on a green laser. She tapped a big green "START" button on a screen next to her and  turned back to the table.
Nothing was happening. "Turn on the fog machine," Sam said to Mark. "We need to line up the experiment." Mark nodded and switched on the fog machine so that a blanket of steam revealed the path of the laser through the various pieces of equipment.
Sam pointed at the mesh. "You can see a lot of green scatter from the mesh. That's the wrong position."
Mark nodded. He reached forward and slid the mesh forward. The computer next to Sam beeped several times and the counters displayed on the screen moved in fits and starts.
"It's okay," Sam said, "You're moving the mesh and your arm is blocking one of the pinholes. The computer beeps when the counters are mismatched."
Mark nodded and kept fiddling with the mesh. No matter which way he pushed or pulled it, the green lines seemed to cross or scatter around the mesh. "Jesus," he said, "That's a lot of fog."
"Turn it off now, we have enough," said Sam.
Mark turned to switch the fog machine off. As he turned back, his arm brushed one of the mirrors on his side of the table. He continued to adjust the mesh.
"Can't you turn of the beeping?" he asked.
Sam shook her head. She was looking at the receptor sensor on the left side of the table.
Mark finally lined the mesh up in such a way that he stopped seeing any green dots or lines forming in the wavy steam in front of the mesh. The computer started beeping faster and faster until it was a continuous tone.
"There," he said.
"What what what?" asked Sam.
"Done," Mark announced.
The computer tone shifted higher and higher in pitch until Sam covered her ears.
"What's that noise?" said Mark, raising his voice and then covering his ears as well. The computer speaker wasn't very loud but the high pitched squeal was very sharp.
Sam took her hands off her ears oblivious to the sound. She pointed at the mesh Mark had been moving. Mark turned his head to follow her pointing finger slowly. His mouth opened and his hands fell from his ears as well.
The mesh had disappeared.