No.2 pencils are widely used, but you may not know what the number actually refers to. This video explains how pencils developed into their modern form and the significance of the labeled numbers.

The pencil “lead” is actually a mixture of graphite and clay. More clay in the mixture makes the lead harder. A harder lead has a higher number. Pencils are numbered from 1-3 but most people use a ...

Employer Identification Number (EIN) Definition: A 9-digit number obtained by a business with paid employees from the IRS. If you're a sole proprietorship, your EIN is your social security number.

A 9-digit number obtained from the IRS by a business with paid employees. If you're a sole proprietorship, your taxpayer ID number is your social security number. One of the first steps you will ...

Apple Pencil compatibility with iPads varies widely among the four Apple Pencil models and the many compatible tablet ...

That hasn't stopped Apple from inventing and selling their own stylus, the Apple Pencil, which is designed to work with the iPad. But while a number of iPads now have stylus support, you can't use ...