Newton's Cradle (TEDCO) physics It is the maximum class

It is the maximum class allowed for laser pointers in the USA and Canada (from Per Chat GPT 4

For reference

our favourite is 2

It’s a classic science toy that uses your body heat to make the liquid in the glass ornament bubble just as if it were boiling

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Newton's Cradle (TEDCO) physics It is the maximum classNo doubt you've seen one before the question is: have you owned one for yourself? First invented in the 1960's, the Newton's Cradle became a popular "executive toy" in the 1970s (something for important executives to fiddle with while they're on the phone). What's the proper way to use it you ask? Our answer: any way you like! You can try it pulling 1, 2, 3 or 4 balls at a time our favourite is 2, but why not find out your favourite for yourself? For