Why hasn't someone invented a color fax machine?

Answer simple.... facsimile is send using audio tones. These tones are called "mark" and "space". The mark tone and the space tone control the image on the facsimile machine.SInce the machine uses two ton... Read More »

Top Q&A For: Why hasn't someone invented a color fax machine

I have been asked to clean a home for someone that hasnt been deep cleaned in years.. how much should I charge?

Steve's right.I run a housecleaning business & I learned--the hard way--to charge by the hour. It will ALWAYS take you longer than you think it will when you're doing a deep cleaning.And the custo... Read More »

Who invented a machine called a lasting machine that stitched the leather of a shoe to its sole?

Jan Ernst Matzeliger invented the lasting machine. The lasting machine places and attaches the leather upper part of the shoe to the sole. A native of Dutch Guiana born in 1852, Matzeliger develope... Read More »

Who invented the ice machine?

The inventor of the ice machine was Thaddeus Sobieski Constatine Lowe. He was granted a British patent and his ice, that was produced commercially via his invention, was first sold in 1866 in Dalla... Read More »

Who invented the EKG machine?

Willem Einthoven, a psychologist from the Dutch East Indies, developed a string galvanometer, a device used to take an electrocardiogram (EKG), in 1903. Doctors use an EKG to find out whether patie... Read More »