It was 23 March 1956. I got up very early to arrive on time, 7:45 a.m., at the Montegrande transmitting station of Transradio International.
The reward is found in giving, not in keeping.
I went through all my years of undergraduate electrical engineering school (1951–1956) without hearing the name Nikola Tesla, even in those courses explicitly dealing with alternating current (ac) machines, or with energy transmission, or with wireless communications.
The universe is the most fundamental wonder: we, as humans, face it every day, contemplate it in endless amazement, question it in our search for answers. And long ago, at a particular moment in a tiny piece of that great wonder, a second wonder, perhaps deeper in reach, emerged: life. Then, slowly, life evolved to contain within it a third wonder, possibly greater in some respects than the universe itself: the human mind.
The origins of convolution and its further and rather complex historical development were dealt with in detail in a previous article. We saw there that it can be traced back to the middle of the 18th century; however, its modern form and use are not more than 50 or 60 years old.
A previous “Retrospectroscope” note dealt with spirometry: it described many apparatuses used to measure the volume of inhaled and exhaled air that results from breathing. Such machines, when adequately modified, are also able to measure the rate at which work is produced.
Biomedical engineering history is full of hidden treasures, one of whom is Al-Zahrawi, a Muslim surgeon who had a wide reputation in Europe during the Middle Ages. Herein, besides recalling that he was a surgeon, the intent is to spotlight his talent in biomedical engineering.
In general, integral transforms are useful tools for solving problems involving certain types of partial differential equations (PDEs), mainly when their solutions on the corresponding domains of definition are difficult to deal with. For a given PDE defined on a domain…
Scientists have recently reported the presence of water on Mars, renewing the hope that life exists on that planet and simultaneously offering a still-distant—but closer—dream for a place to be free (or perhaps freer?).
Introducing the Authors
When the stream is driven by a powerful pump, the running waters can take you to the unknowns of the mind.
—Max E. Valentinuzzi
Elisa Pérez was born in San Juan, Argentina, in 1978. She graduated as a bioengineer from the Universidad Nacional de San Juan