The necessity and importance of the standardization of electrical apparatus was recognized in Germany as early as 1894 and . the first rules (\"Sicherheitsvorschriften für elektrische Starkstromanlagen gegen Feuersgefahr\") came into force in that country in 189S. In the U. S. of America the first discussion on Standardization of Generators, Motors and Transformers took place in 1898 which resulted in the appointment of a Committee and the subsequent acceptance of the rules proposed by it. In England the BritishEngineeringStandards Association was formed in IgOI. In connection with the British Standards an explanatory note appears necessary: The B. E. S. A. 's rules have for many years been the only generally accepted Standards. Since 19I3 the British Electrical and Ailied Manufacturers Association, representing the most important powerful British manufacturing firms, have issued Standardization Rules of their own which have attained considerable commercial importance, A special edition of these rules has been issued for export work which on the whole are guided by ideas similar to those embodied in the B. E. S. A. rules. As far as can be gleaned from the article in the th \"Electrical Review\" (Vol. 86 Nr. 2, 216, April 16 1920) it isintended to publish a new revision of the B. E. S. A. 's rules which will probably contain some of the recommendations of the B. E. A. M. A., so that this will probably mean the return to one single system of Standards for Britain.

The necessity and importance of the standardization of electrical apparatus was recognized in Germany as early as 1894 and . the first rules (\"Sicherheitsvorschriften für elektrische Starkstromanlagen gegen Feuersgefahr\") came into force in that country in 189S. In the U. S. of America the first discussion on Standardization of Generators, Motors and Transformers took place in 1898 which resulted in the appointment of a Committee and the subsequent acceptance of the rules proposed by it. In England the BritishEngineeringStandards Association was formed in IgOI. In connection with the British Standards an explanatory note appears necessary: The B. E. S. A. 's rules have for many years been the only generally accepted Standards. Since 19I3 the British Electrical and Ailied Manufacturers Association, representing the most important powerful British manufacturing firms, have issued Standardization Rules of their own which have attained considerable commercial importance, A special edition of these rules has been issued for export work which on the whole are guided by ideas similar to those embodied in the B. E. S. A. rules. As far as can be gleaned from the article in the th \"Electrical Review\" (Vol. 86 Nr. 2, 216, April 16 1920) it isintended to publish a new revision of the B. E. S. A. 's rules which will probably contain some of the recommendations of the B. E. A. M. A., so that this will probably mean the return to one single system of Standards for Britain.

My 5 Senses - Activities and Printables - Touch, taste, smell, sight, sound... so many fun kids activities!

Need a Valentine's Day STEM idea? Try this Invisible Heart Activity for Kids. Toddlers and preschoolers will love this easy science activity.

Kids will love learning about the components of blood with this fun and memorable activity - make a blood model!

Kombucha is a delicious nectar when it doesn't have any flavor added, but add some flavor and it becomes a powerhouse of nutrition and a delicious tangent from typical health drinks. This Apple Kombucha has the added spunk of rosemary that bring a subtle burst of flavor that will have you coming back to your refrigerator for more and more.

Experiment your way around the world with these 50 science experiments related to different countries and cultures around the world

Learn about the human digestive system for kids twith this memorable digestion experiment. ZANY human body project making poop!

a quick and simple calming strategy craft to teach students about deep breathing.

These fun and educational Anatomy Activities for Elementary Students are perfect for your homeschool human anatomy lesson. Kids will love them.

Discover nocturnal animals art ideas to inspire your toddlers to create! From glow-in-the-dark owls to bat silhouettes, there's a project for every artist!

Builtin window bench and bookcases including photos of the space before and after, and the progression from concept to completion.

Fine Motor Journals are a place where students can do various fine motor activities such as writing, drawing, name activities, and cutting! It's like a mini-portfolio just about a student's fine motor skills, so instead of tons of random papers with fine motor activities, it's now in one organized spot! Fine motor journals are FUN short activities to support students learning how to write, draw, cut, and develop strong fine motor skills and match the learning theme (ex: transportation, pets, Valentine's Day, Earth Day, fall, spring) you are doing in your classroom.

Preschoolers have BIG FEELINGS. Having a preschool emotions sensory bin in the classroom is perfect for the beginning of the school year.

Here are 22 circle time ideas for toddlers and preschoolers that are easy, fun, and perfect for social development!

Make bubble art with bubble solution and food coloring- a great opportunity for making outdoor art!

Research shows us that kids learn better when they are actively involved and having fun. It only makes sense that the same is true when it comes to teaching punctuation. These cute punctuation mark stick puppets make it more fun with plenty of hands-on learning opportunities.

Making a worm farm in a jar is a fun and easy way to teach kids about the importance of earthworms and how they help improve soil health.

Kids will be WOWED with this hands-on, fall science experiment where they will explore Why do Leaves Change Color for kids! Fun Leaf Activity!