★This book is a new work by CARLOS BLANCO VáZQUEZ, a member of the Spanish Society for the History of Science and Technology, and a doctor of telecommunications engineering. He has cooperated with Dr. Charles Kuen Kao, the winner of the 2009 Nobel Prize in Physics, for many years. One of the papers they jointly published played an important role in Dr. Kao's winning the Nobel Prize in Physics!

San Agustín de Hipona, from the city of Hippo in North Africa, said: "What is time? If no one asks me, I may think I know the answer. But if I explain to the questioner, I don't know where to start." (354-430 AD)

How did the concept of time evolve in our history? How do different disciplines such as astronomy, physics, mathematics, biology, or art deal with their time research? What methods have humans used to measure it since ancient times? How did this development path come into being, from the early calendar to the present being able to make accurate measurements? How does the passage of time affect our biology, and how can we measure it?

Time always exists in our lives, and it affects us all the time. We all understand that we can and we should measure it because it helps us organize our lives, but time flies so fast that we even cling to the idea that time will never pass. Since ancient times, human beings have linked the circle of life, economy and society with the operation of stars in the sky, since then, human beings have never wanted to change this norm that regulates their lives. Human beings, representing the best ideas, may not have solved the most intrinsic essence of time, but they have been able to produce the most complex and wonderful instruments to measure it, and in this way regulate all their social activities with absolute accuracy. This book runs through history, it is read to understand elaborate installations, philosophical concepts, biological research and even works of art, and it will accompany readers on the extraordinary path that human beings must take in their lives to uncover and comprehend the most important mystery of the concept of time.

CARLOS BLANCO VáZQUEZ
He holds a Ph.D. in Telecommunications Engineering, a Master's degree in Physics and an MBA. In 1970, he began his career at the ITT Center for Standard Electrical Research in Madrid. In 1976, he participated in the laying of the world's first optical fiber line and installed the first optical fiber line in Spain in 1980. In 1982, he received the invitation of Dr. Charles Kuen Kao and moved to Virginia. He made great contributions to becoming a collaborator of Dr. Kao in the field of optical communication and a researcher of the ITT team. Dr. Kao won the Nobel Prize in Physics in 2009. During this period, in addition to doing research, Dr. Blanco and Dr. Kao also shared their cooperation at Virginia Polytechnic Institute and State University as visiting professors. Later, Dr. Blanco was appointed adjunct professor at Virginia Polytechnic Institute and State University. As a result of their research at ITT and Virginia Tech University, Dr. Kao and Dr. Blanco jointly published several papers on optical fiber, one of which played an important role in Dr. Kao's winning the Nobel Prize in physics. Blanco has published several books in the United States detailing his research in optical communications, he has published numerous articles in international journals and holds several patents, most of which have been registered and used in the United States. After returning to Spain in 2002, Dr. Blanco joined the European University of Madrid as a full professor. He is currently teaching a course on "the Next Generation of Advanced Telecommunications Networks" at the university. He is a member of the SEHCYT and the Forum on the History of Telecommunications, he is the author of The History of Calculus.