By Maxine Carter-Lome, publisher Fifty years ago this past April 3, 2023, Motorola engineer Martin (Marty) Cooper placed a phone call on a street in downtown New York City to […]
Tag Archives: cellular telephones
the 19th century, an era of rapidly accelerating scientific discovery and invention. Significant developments in the fields of mathematics, physics, chemistry, biology, electricity, and metallurgy laid the groundwork for the […]