The American man of science, Benjamin Franklin, who endured both nearsightedness as well as presbyopia, devised bifocals in 1784 to obviate having to frequently alternate between 2 pairs of glasses.

The 1st lenses for rectifying astigmia were manufactured by the British astronomer George Airy within 1825.

Along bifocal history, the building of spectacle frames also developed. Early on oculars were contrived to be either held in place with hand or by maintaining force on the nose. Girolamo Savonarola advised that oculars could be held in place with a ribbon passed over the subject’s head, this in turn fastened by the weight of a hat.

The contemporary fashion of bifocal reading glasses, supported by temples passing over the ears, was produced in 1727 by the British lens maker Edward Scarlett. These designs were not at once prosperous, however, and assorted styles with attached handles like “scissors-glasses” and lorgnettes stayed fashionable throughout the eighteenth and into the early nineteenth century.

In the early twentieth century, Moritz von Rohr at Zeiss produced the Zeiss Punktal spherical point-focus lens system which dominated the eyeglass lens field for several years.

Despite the improving fame of contacts and laser restorative eye surgery, spectacles stay quite common, as their engineering has continued to improve. For example, it’s currently possible to buy frames constituted of special memory metal alloys that return to their correct configuration after being bent. Other frames have spring-loaded hinges.

Either of these designs offers distinctly better ability to resist the stresses of day-to-day wear as well as the occasional accident. Contemporary frames are likewise frequently made from substantial, light-weight materials like titanium alloys that weren’t available in earlier times.

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Elevator Speech or Elevator Music?

• The effectiveness of any communication is the result that you get!
• The result that you get is directly correlated to your intention.
• You always have an intention, whether you know what it is or not.

An Elevator Speech Challenge is a global tool that gets you business, a job or investment capital. The intention of an Elevator Speech is that business professionals, entrepreneurs, job seekers and sales professionals develop, refine and deliver a kick-butt 100% congruent elevator pitch that delivers your intended results.

It is said that if you try everything to everyone you will end up being nothing to no one. This is absolutely accurate for you 30 second self introduction! The best Elevator Speech Example is ones that you experience at local networking events. Here is whay you will notice:

• Most people are nervous, shy and embarrased
• Most people have never practiced their elevator pitch.
• Many people skip their opportunity.
• You don’t remember 98% of the elevator speeches.

But in virtually every networking setting there is someone that delivers the perfect elevator speech example!

• The Elevator Speech – Speaks to a specific problem.
• The Elevator Pitch is wastes no words and is practiced.
• The Self Introduction delivers a simple call to action.
• The person has people find them after the meeting or hand them business cards while they are walking back to their seat.

Find Video Elevator Speech Examples here and get ready to enter Networking Event Finders’ Global Elevator Speech Challenge beginning February 3, 2009!