
We welcome you to our world of Technology and Safety..! We, The Sparks, hope that you will greatly enjoy this blog from us as we post articles, photos and videos of the past, present and future of our Technology and Safety Research....





http://inventors.about.com/library/inventors/blsteamengine.htm


Not all technological developments for safety purposes are safe. A popular but potentially deadly fire extinguisher of the past was the Carbon tetrachloride (CTC) extinguisher. The CTC extinguisher was used primarily for flammable liquids and electrical fires. There were two methods to apply CTC to a fire; a pressurized brass or chrome canister or a round glass bottle, commonly known as a “CTC bomb”. The brass or chrome canister was pressurized by a hand pump mounted in the canister which pushed the CTC out of a hose toward a fire. The rounded glass bottle or “bomb” was thrown into a fire. The glass would break dispersing the CTC into the flames to extinguish the fire. The “CTC bomb” was also available as an automatic extinguisher. The ball of CTC was suspended from the ceiling or wall on a chain which had a fusible link. When the fusible link melted from the heat of a fire, the glass ball would drop and break, dispersing the CTC into the fire area.


Cesare Lombroso, in 1895, was the first to utilize such an instrument, but it was not until 1914 and 1915 that Vittorio Benussi, Harold Burtt, and, above all, William Marston produced devices establishing correlation of blood pressure and respiratory changes with lying. In 1921 an instrument capable of continuously recording blood pressure, respiration, and pulse rate was devised by John Larson. This was followed by the polygraph (1926) of Leonarde Keeler, a refinement of earlier devices, and by the psychogalvanometer (1936) of Walter Summers, a machine that measures electrical changes on the skin. A more recent innovation is a device, developed in 1970, called the psychological stress evaluator, which measures voice frequencies from tape recordings. Although the lie detector is used in police work, the similarity of physical changes caused by emotional factors such as feelings of guilt to those caused by lies has made its evidence for the most part legally unacceptable. An assessment of such devices by National Research Council (an arm of the National Academy of Sciences ) found that they also were too unreliable to be used in screening for national security purposes, but they are widely used for such purposes nonetheless, sometimes with inconsistent results from one government agency to another. The use of lie detectors to screen employees and job applicants is highly controversial.


What is a Thermometer? "Thermometers measure temperature, by using materials that change in some way when they are heated or cooled. In a mercury or alcohol thermometer the liquid expands as it is heated and contracts when it is cooled, so the length of the liquid column is longer or shorter depending on the temperature. Modern thermometers are calibrated in standard temperature units such as Fahrenheit or Celsius."
thermometers were called thermoscopes and while several inventors invented a version of the thermoscope at the same time, Italian inventor Santorio Santorio was the first inventor to put a numerical scale on the instrument. Galileo Galilei invented a rudimentary water thermometer in 1593 which, for the first time, allowed temperature variations to be measured. In 1714, Gabriel Fahrenheit invented the first mercury thermometer, the modern thermometer.
nheight & Celsius Scales: Daniel Gabriel Fahrenheit (1686-1736) was the German physicist who invented the alcohol thermometer in 1709, and the mercury thermometer in 1714. In 1724, he introduced the temperature scale that bears his name - Fahrenheit Scale. -AND- The Celsius temperature scale is also referred to as the "centigrade" scale. Centigrade means "consisting of or divided into 100 degrees". The Celsius scale, invented by Swedish Astronomer Anders Celsius (1701-1744), has 100 degrees between the freezing point (0 C) and boiling point (100 C) of pure water at sea level air pressure. The term "Celsius" was adopted in 1948 by an international conference on weights and measures. 





1923 - Charles F. Jenkins on June 14 made his first experimental wireless television transmissions with a mechanical system from the Navy radio station in Anacostia to his Jenkins Laboratories office in Washington D.C.; Vladimir K. Zworykin applied for a patent on his iconoscope cathode ray tube. 

The development of surgery occurred in different regions at different times, in China, India, South America, Mesopotamia, Persia, Arabia and finally Europe. The early surgeons were either priests, magicians, physicians or barber-tradesmen who understood anatomy and were comfortable with the common practices of amputation and trephination.
By World War II, the military hospital tent system was expanded to include the peripheral-style design for operating rooms that allowed for multiple patients to be operated upon simultaneously. All necessary components could be powered and supported from any location within the tent, so that a single tent had the flexibility to allow for a variable number of casualties to be operated upon at any time.
1952 1960

1"stereopticon." The Columbia Encyclopedia, Sixth Edition. 2008
Encyclopedia.com. 5 June.2009 http://www.encyclopedia.com/
2"The Rhoads Operahouse Fire; The Legacy of a Tragedy/cd 2008Maranatha Broadcasting Co. Inc Allentown, PA USA webmaster@wfmz.com

On November 10th 1951 the mayor of Englewood, NJ picked up a phone and dialed a ten digit number for the first time. Eighteen seconds later he was connected to the Mayor of Alameda, CA who was Mayor Frank Osborne. They made history that day because it was the first customer dialed long distance call and it also introduced area codes. The Direct Distance dialing was so great because it cut the costs of long distance calls because they no longer needed the operator to get them a number! Imagine today having to pick up a phone and ask the operator to put your best friend on the line; technology has come a long way since 1951!

long-lasting electric light. Meanwhile, an American inventor was already working his way to creating "better-longer- lasting" light bulbs. Thomas Edison that was, discovered that these carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow for over 1500 hours. These bulbs lasted to a great minimum of time, but as technology improved in our world, than greater, better and much, much longer-lasting light bulbs were invented. That is why today even our nights are bright. What a difference..!
Well with our technology in the past this is what our WWII was based on. It was based on allegations and threats, all written in codes, by other countries to ours. In order to understand what the threats were, people had to work numerous hours and days trying to figure out what the codes meant. It was then considered to be a laborious process. "In spite of the destruction of the Colossus hardware and blueprints as part of the effort to maintain a project secrecy that was kept up into the 1970s—a secrecy that deprived some of the Colossus creators of credit for their pioneering advancements in electronic digital computing during their lifetimes—a functional replica of a Colossus computer was completed in 2007"! The newer version doesn't seem very much different, although
it is said to be less confusing.. hm go figure..!The main objective of Sparks is to seek and share knowledge pertaining to Technology and Safety. To get through this project Sparks will communicate through:
Wiggio, Chat Rooms, and Bucks mail. Cell or phone numbers will be shared for secondary communication. Decisions will be made by group consensus. Conflicts will be resolved through discussion. If the team is unable to resolve a conflict the team may seek council from faculty members. All team members will contribute weekly postings to the blogs.