Person YOU are retarded. the trick is simply to slide the upper coin and hide a second one under your other hand. There are no magnets like the video says. Still i think that guy is pretty good at it
I know a simular coin through glass trick. The secret is actually quite clever and easy. If you want to know the secret I suggest you buy Kevin Parkers descent, it's just 28 bucks or so.. I hope you get it!
Ah cell medium, a very fraught subject in biology. Two quick points that were not covered, or not covered very well in the article. First, the red color comes from a chemical, phenol red, that is used to monitor pH. If the solution gets too acidic it turns yellow, too basic and it turns purple. Although phenol red has been used forever, it is a slight estrogen mimic, which can alter how the cells work, especially if you are looking at estrogen receptors, but you can get EMEM and DMEM without phenol red.
Second, the article dosen't really talk about another important part of cell media, FBS or fetal bovine serum. This is added to the cell growth media to provide important hormones (like insulin) and other growth factors (which aren't completely understood) to the cells. This is an animal product which varies from batch to batch, and you can see how this causes issues in repeat-ability, as well as not being a human product for studying human cells.
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this is the real way to do it
Second, the article dosen't really talk about another important part of cell media, FBS or fetal bovine serum. This is added to the cell growth media to provide important hormones (like insulin) and other growth factors (which aren't completely understood) to the cells. This is an animal product which varies from batch to batch, and you can see how this causes issues in repeat-ability, as well as not being a human product for studying human cells.