Showing posts with label inventor. Show all posts
Showing posts with label inventor. Show all posts

July 27 - Lu Pan Day in Hong Kong

Posted on July 27, 2022     


This is an update of my post published on July 27, 2011:



Have you ever heard of Lu Pan, the Chinese Leonardo da Vinci?

He is said to have invented the drill, plane, shovel, saw, lock, and ladder. And his wife is credited with inventing the umbrella!

Today is the traditional birthday of this Taoist hero and inventor, who is said to have been born on this day in 507 B.C.E. Lu Pan was an architect and engineer and is considered the patron saint of carpenters.


These photos show traditional Chinese
(and Japanese and Korean)
carpentry tools.

Try your hand at carpentry!

Here are a few ideas. 
Here is a book that can help with lots more ideas. 




July 10 - Happy Birthday, Nikola Tesla

   Posted on July 10, 2022     


This is an update of my post published on July 10, 2011:




Just a few days before I wrote this post - more than a decade ago - I was visiting the Niagara Falls in New York. I was marveling at the power of the Niagara Falls, I was busy feeling the spray and mist, hearing the thunder of millions of gallons of water falling 60 to 180 feet and pulverizing the rocks below, and seeing the green-blue water froth white with speed and impact. If you ever get a chance to see Niagara Falls, go for it!

As I walked away from the falls, I saw a large statue of a man perched on a stool, reading or studying a plan or something. I ran to see who the statue depicted—and I was startled to see it was scientist and inventor Nikola Tesla!

What is a statue of this man, who was an ethnic Serb, born on this day in 1856 in the Austrian Empire, which became Yugoslavia and is now Croatia—what is a statue of Nikola Tesla doing here in Niagara Falls, New York, USA?

Apparently Tesla came to the U.S. in 1884. He built the first hydro-electric plant in Niagara Falls, and (according to the Tesla Memorial Society of NY), this was the “final victory of Tesla's Alternating Current over [Thomas] Edison's Direct Current.” At one time, the Niagara Falls power plant was the largest in the world.



By the way, the Canadian side of Niagara Falls has a statue of Tesla, too. Rather than looking academic, this statue depicts Tesla in quite a dashing pose, holding onto his top hat and flourishing his cane. There are plaques and other memorials in the area devoted to Tesla, as well!

I do love to see a memorial created to a scientist rather than a warrior!


June 26 - Invention of the Toothbrush

   Posted on June 26, 2022     


This is an update of my post published on June 26, 2011:



People used chew sticks, toothpicks, and even cloths to clean their teeth.

They rubbed sulfur oil, salt water (saline), or baking soda on their teeth.


They even frayed one end of a twig from a nice-smelling bush or tree to clean their teeth and freshen their breath.

But, until this day in 1498, people didn't brush their teeth.

The Emperor of China patented a toothbrush made of bamboo with stiff hogback bristles attached at right angles to the bamboo. Tooth hygiene was much easier with a brush rather than a stick, and word of the invention traveled back to Europe and, eventually, all over the world.

Celebrate! Buy new toothbrushes today!

Did you know you should...

  • use a toothbrush with soft nylon bristles.


  • change your toothbrush every 3 to 5 months, plus after every cold or flu.

  • clean your toothbrush with running water after each brushing and allow it to air-dry in an upright position without contacting other toothbrushes.