This is a video from the National Physical Laboratory (NPL) of the world’s smallest Christmas card that they created. Just how small is it? Let me copy/paste that for you while I distribute the usual $1 lotto scratchers to my favorite coworkers around the office. If they win anything though they have to split it with me.

Measuring in at 15×20 micrometres in size, you could fit over 200 million cards in a single postage stamp by volume.

In a cubic metre, similar to the size of a post box, you could fit 7 quadrillion (7,000,000,000,000,000) of these cards – roughly 900,000 for every person on Earth

To make the card 10cm in height, you would have to magnify it 5000x; equivalent to blowing up a postage stamp to the size of a football field.

The card was made on a silicon nitride membrane 200 nm thick, with a coating on each side of 40 nm of platinum 40 nm.

NPL’s card is 10 times smaller than the previous record-holder.

Wow, these must be really popular to send this year. “Why’s that?” Because I haven’t gotten any regular size holiday cards in my mailbox yet. I’ll have to bring my microscope when I check the mail this afternoon. “You’re cute, GW.” Thanks, I’ve always thought I had a sort of boyish charm. “I meant cute like, sad and pathetic.” I know what you meant.

Keep going for the the whole video, complete with a view of the card’s inside.

Source: Geekologie – The World’s Smallest Christmas Card (Is 200 Million Times Smaller Than A Postage Stamp)