Like other concepts for invisibility cloaks that have tantalized the geeky imagination, this one relies on optical illusion.
When I was 5 years old, my mother always told me that happiness was the key to life. When I went to school, they asked me what I wanted to be when I grew up. I wrote down ‘happy’. They told me I didn’t understand the assignment, and I told them they didn’t understand life.==> I AM A STUDENT OF CIVIL ENGINEERING
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