porfa alguien q me ayude haciendo un ensayo en inglés sobre algun invento importante porfa gracias 100 puntos al q me ayude
Respuestas a la pregunta
The penicillin was discovered the 28th September 1928, thanks to Alexander Fleming. It is said he was experimenting with the influenza virus in the laboratory at St Mary’s Hospital in London. He was often described as a careless lab technician, and he had returned from a 2-week vacation to find that a mold had developed on a culture plate, and it was preventing its growth. The discovery was an accident, but it’s an accident that has saved millions of lives since its discovery. The first true antibiotic, and the beginning of a whole new era for medical treatments.
Respuesta:
When I had no cell phone I was happy
In the beginning it was the landline ... and then it was the cell phone
A lot of water has run under the bridge since that one, distant 1973, when Martin Cooper developed the first mobile cell phone in history, with his team at Motorola. It took another 10 years for the world to commercially access this technology in 1983. Until that time the reign over remote electronic communications, or telecommunications, was exercised by fixed telephony, by cables.
In Colombia, on the other hand, another 10 years were required so that, in 1993, under the 1991 Constitution, the famous Law of Cellular Telephony and Joint Ventures was approved, through which the telephony business was allowed Cellular and Joint Ventures, such as the necessary alliance, at the level of the State and national and international private investors, which would enable the establishment of such revolutionary communications technology in our country, very expensive and highly complex at that time. But it was only towards 1997, that is to say, 4 years after the law was established, when mobile cell phones stormed the national market, even though the first companies providing cellular communication service had already appeared, by region, that after a process of alliances, mergers and absorptions gave rise to the companies that now have control of the business.
Many of those who now read this chronicle surely did not live or do not remember how the world was without the use of this unique device that today is a common thing and against which children and young people must think that it has always existed and see it as normal , natural, irreplaceable and absolutely necessary and do not conceive of the world, nor its development in life, without having a telephone with them.
Moreover, for a large majority of young people and adults it is a prestigious symbol to have a cell phone, but not just any, but one with the latest news; that is, with the latest innovations. In fact, they no longer settle for less than a Blackberry or an Iphone, which has made the cell phone an integral part of their existence, part of the identity of their lives; a new appendix without which you cannot live.
For students of the economics of innovations, the cell phone is an indicator of progress, of development of peoples, of advancement in technology. For the arribista and the snobber, it is an almost tragic sign not to have a cell phone, or not to have two or three, it means to be able to communicate cheaper with his friends according to the operator. Definitely the cell phone is here to stay and the vertiginous advances that we see today make us think that there are still many developments to come and that our imagination is not enough to glimpse. The landline, surely soon, will be history