Nikola Tesla July 1856 – 7 January was a Serbian-American inventor, electrical engineer, mechanical engineer, physicist, and futurist best known for his contributions to the design of the modern alternating current (AC) electrical supply system.
Rare photograph of an Onna-bugeisha, female warriors of the upper social classes in feudal Japan. Often mistakenly referred to as “female samurai”, female warriors have a long history in Japan, beginning long before samurai emerged as a warrior class.
So many times I have been asked for help with a query, where the questoin really comes down to the understanding of the difference between INNER and LEFT or RIGHT JOINs. I created this poster a few years ago and…Read more ›