#ultrafacts

Isn't it?🤔

The first time a Navajo baby laughs, the family throws a party. The person who made the baby laugh covers the expenses, prepares the food, gathers the rock salt, puts candy and gifts into bags, and invites friends from near and far.

The Navajo have a unique tradition. When a baby is born, it is regarded as the ultimate, precious gift and must never be abused. From the moment of birth, the child is watched over continuously by family and friends, who patiently wait for the child’s first…laugh.

“Has your baby laughed?” is common question posed to parents who have infants around the age of three months. The first laugh of a Navajo child is a very significant event. It marks the child’s final passing from the spirit world to the physical world, meaning he or she is now fully human. This milestone warrants a party, and what a party it is!

Whichever brother, sister, parent, cousin, aunt, uncle, or passing acquaintance is present at the first laugh is deemed to have caused it.  The laughter instigator then receives the honored privilege of preparing a special ceremony to welcome the child into society.

Once a baby has laughed, training in generosity begins immediately—a value held in high regard among the Navajo people. At the party, where the baby is considered the host, the parents or person responsible for the first laugh help hold the baby’s hand as he or she ceremonially gives the rock salt, food, and gifts to each guest. There are also bags of candy, money, and other presents that the child “gives” along with the food.

By holding his brass microscope toward a source of light, van Leeuwenhoek was able to observe living organisms too small to be seen with the unaided eye.

The specimen was placed on the tip of the adjustable point and viewed from the other side through the tiny, nearly spherical lens. The highest magnification possible with his microscopes was about 3003 (times).

Some of van Leeuwenhoek’s drawings of bacteria were made in 1683. The letters represent various shapes of bacteria. C–D represents a path of motion he observed