History & Mysterie

 History of Headphones       Nathaniel Baldwin was a creator of today’s modern headset taken by an in 1910. The predecessor to modern headphones, his invention benefited from having the speakers placed over the ear, blocking out background noises and enhancing the sound from speakers. The modern headsets were John C. Koss and Martin Lange, again from America. They developed the world’s first stereo headphones driven by a passion for music and great sound releasing the Koss SP3 stereo headphones in 1953.       These early models lacked padding and were often uncomfortable to wear for long periods. Their impedance varied; headphones used in telegraph and telephone work had an impedance of 75 ohms. Those used with early wireless radio had more turns of finer wire to increase sensitivity. The impedance of 1000 to 2000 ohms was common, which suited both crystal sets and triode receivers. Some very sensitive headphones, such as those manufa...

History of Artificial Intelligence:           In the 1940s and 50s, a handful of scientists from a variety of fields began to discuss the possibility of creating an artificial brain. The field of artificial intelligence research was founded as an academic discipline in 1956.        From 1957 to 1974, AI flourished. Computers could store more information and become faster, cheaper, and more accessible. Machine learning algorithms also improved and people got better at knowing which algorithm to apply to their problem. Early demonstrations such as Newell and Simon’s General Problem Solver and Joseph Weizenbaum’s ELIZA showed promise toward the goals of problem-solving and the interpretation of spoken language respectively. These successes, as well as the advocacy of leading researchers, convinced government agencies such as the Defense Advanced Research Projects Agency to fund AI research at several institutions.       ...

History of Religion:          P eriod of religious history begins with the invention of writing about 5,220 years ago (3200 BCE). Writing played a major role in standardizing religious texts regardless of time or location, and making easier the memorization of prayers and divine rules. The concept of "religion" was formed in the 16th and 17th centuries, the word religion as used in the 21st century does not have an obvious pre-colonial translation into non-European languages.            The 19th century saw a dramatic increase in knowledge about a wide variety of cultures and religions, and also the establishment of economic and social histories of progress. Usually, religions were divided into stages of progression from simple to complex societies, especially from polytheistic to monotheistic and from extempore to organized.                     The...

History of Photography and the Camera:      The basic concept of photography has been around since about the 5th century B.C.E. It wasn't until an Iraqi scientist developed something called the camera obscura in the 11th century that the art was born.      Even then, the camera did not actually record images, it simply projected them onto another surface. The images were also upside-down, though they could be traced to create accurate drawings of real objects such as buildings.      The first camera obscura used a pinhole in a tent to project an image from outside the tent into the darkened area. It was not until the 17th century that the camera obscura became small enough to be portable. Basic lenses to focus the light were also introduced around this time.           During the 1800s, Britain and France were neck and neck in the race to get early photographic technology off the ground. The French initially pippe...

    History of Chemistry         Chemistry is a branch of science that has been around for a long time. In fact, chemistry is known to date back to as far as the prehistoric times. Due to the amount of time chemistry takes up on the timeline, the science is split into four general chronological categories. The four categories are: prehistoric times - beginning of the Christian era (black magic), beginning of the Christian era - end of 17th century (alchemy), end of 17th century - mid 19th century (traditional chemistry) and mid 19th century - present (modern chemistry).                                             The history of chemistry represents a time span from ancient history to the present. By 1000 BC, civilizations used technologies that would eventually form the basis of the various branches of chemistry. Examples include extractin...

History of Languages It seems that academics and professionals are still not entirely sure of how old language is, but general consensus us that it has been with us since around 100 000 BC. As a result of this disagreement, it is even harder to accept which is the oldest surviving language. That is, one that is still in use in our modern world. Currently, about 7,000 languages are spoken around the world. They belong to different language families and their origins date back thousands of years ago. Researchers are still finding it difficult to determine which language is the oldest. However, the earliest written languages on record are the cuneiform script that was discovered in Mesopotamia that dates back to 8th millennium BC. The Sumerian script that started in the 3rd millennium BC was developed for funerary inscriptions because the Sumerians were concerned about their afterlife. Early History For centuries, humans have wondered about the origins of language and yet nobody is ...