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As someone who just had a video call while on the road, I’m struggling to believe that it’s actually real.
I used a pocket sized, battery powered, computer with a flat screen and wireless data transfer to have a real-time video call with someone. The computer has three cameras on the back and one on the front, which means that about 50% of the cameras I own are actually in that one computer. The data of the operating system and all the necessary files are not stored on magnetic tapes or disks. Instead, it’s using a technology based on nano-scale silicon structures. Actually, some of my data isn’t even stored on the computer. It allows me to access other, much larger, computers that store some of my files such as documents and photos. The tiny computer is also capable of receiving electricity “over the air”, but I wasn’t using that feature at the time. If I told all of this to someone in the 1970’s they would consider me a scifi author.
Also on that "nano-scale" point. Each element in the processor is 10s of atoms across. Actually I think I heard the new Apple processor has a "resolution" of 11 atoms.