403b is similar to a 401k. Contributions and investment earnings in a 403b grow tax deferred until retirement, at which time they are taxed as ordinary income. For the most part, you will pay a 10% penalty if you receive distribution prior to age 59 Â½ except when allowed.
Charles Goodyear and the Invention of Vulcanized Rubber. None of it would have been possible without Charles Goodyear, who in 1844 -- more than 50 years before the first rubber tires would appear on cars -- patented a process known as vulcanization.
The modern era of anesthesia began in the late eighteenth century when chemists began to investigate the use of various gases. Joseph Priestley (1733-1804) discovered nitrous oxide in 1772, and in 1800 Humphry Davy (1778-1829) discovered that the gas had anesthetic properties when it was inhaled.