The Physics of the Ponytail
People have many more. Every hair on a person’s head really consists of many moving parts, since it can bend anywhere along its length to various degrees. And there are around a hundred thousand hairs which interact with each other, applying force to the ...
The birthday problem: what are the odds of sharing b-days?
The same principle lends itself to proving statements such as “in Sydney there will be at least two people with the same number of hairs on their head”. How many people ... We walk in to our room, grab a person – Frank – and put him to the side.
Are Head Lice Bugging Your Child?
Head lice cannot fly or jump. They have claws that allow them to live on the scalp by clinging firmly to hair. Adult head lice are roughly the size of a sesame seed, can live for up to 30 days on a person’s head ... There are many OTC treatment options ...
Children are unique and special
Matthew 10:30 (KJV) lets us know that God knows every detail about us to the minutest details, including how many hairs are on our head. God created each person to be a one-of-a-kind. Every experience that we have writes on the walls of our hearts and ...
How Many Licks? or How to Estimate Damn Near Anything by Aaron Santos
Santos starts off with Chicago piano tuners, and adds 68 more, from classics like “How many hairs are on your head?” to less obvious questions like “Is more silicon used in computer chips or breast implants in a given year?” Each problem has the ...