Vacuum flask

Segment [06:39-09:58] The inventors of Eniac, John Mauchly and Presper Eckert were reluctant to give up their dreams hence they started a computer company. Their first step was to find customers for their company. Eckert and Mauchly knew that their first customers were in the business community. The business community relied on punched card tabulating machines for record keeping and it was a tedious task. Eckert and Mauchly decided to sell their first computer to the U.S. census bureau. They…

While it's great to recycle paper and plastic products, it can be more fun to reuse and repurpose packaging like toilet paper rolls into something that can be used around the house. Save those toilet paper tubes for some fun, crafty storage projects or decorating ideas. Organizing Wires You can paint the toilet paper tubes and label them to slip over extension cords or the tangle of wires behind your computer desk. Whether you get incredibly crafty or keep them plain and simple, toilet paper…

Cell Phones, social media, television, spending nights watching movies and shows, whether with friends or alone, it feels like society have been doing it since forever. Has it become too late to quit? Television has become a huge heavy in families lives, preventing communication and even making ideas all blend into one. Two authors, Ellen Goodman and Ray Bradbury have been looking into this issue in their own style. In Goodman's factual article, “Primal Screen”, she explored how simple it can be…

A Day of Unplugging from the Digital World I accepted the bold challenge of unplugging myself from the usage of any electronic devices over a time span of 24 hours during the last Saturday of April. Initially, I was hesitated to conduct the study as I have become progressively more reliant on technology for its great efficiency and convenience brought to my life. Therefore, I chose the option of 1992 in which telephone and cable TV still within the option of entertainment to increase my chance…

Making Life a Little Extra One Stick at a Time Often times people find themselves going home after a long day of school or work and relaxing on the couch, turning on the television to our favorite show. In the United States, Americans watch an average of five hours of television a day. In the average hour of television there are around fifteen and a half minutes of commercials and advertisements, which mean an American watches about an hour and a half of commercials everyday (Flint). The…

Watching TV Makes You Smarter Thesis: “I believe that the Sleeper Curve is the single most important new force altering the mental development of young people today, and I believe it is largely a force for good: enhancing our cognitive faculties, not dumbing them down.” Thinking Outside the Idiot Box Thesis: “In other words, if I understand correctly, watching TV teaches you to watch more TV—a truth already grasped by the makers of children's programming like Teletubbies, which is essentially…

The Generation of TV Influenced Doctors Over the years, TV shows have become an outlet for many people across the country, but what some people don't realize is that during the process of watching these, shows you are actually learning too. Take the show Grey's Anatomy for example, which is an inspiring and educational show on the uprise. Medical TV shows across America have increased awareness for different medical problems and influenced a new generation of doctors. One of the major pros of…

Dewar has invented the “vacuum flask”. This bottle created a vacuum, which is an effective insulator. Dewar created his insulated bottle by sealing one bottle inside another and pumping out the air between them. In 1904, German glass-blower Reinhold burger and his partner Albert Aschenbrenner who patented Dewar’s invention and manufactured it for commercial use. They are the one who made bottles for Dewar. Burger and Aschenbrenner held a contest to name the “vacuum flask”. A resident of Munich…

p-nitroaniline, and azobenzene charged in a 125 mL Erlenmeyer flask mixed with 50 mL of Et2O. Once dissolved, the mixture is transferred the mixture into separatory funnel and begin acid extraction. 15 mL of 3 M HCl is added to the separatory funnel and inverted until a phase boundary is present. An additional 15 mL of 3 M HCl was then added and inverted again. The aqueous layer was removed through the separatory funnel and placed in a 250 mL Erlenmeyer flask labeled “acid.” 15 mL of a 3 M NaOH…

oxalate solution, beakers (different sizes) , flasks(Erlenmeyer flasks) , test tubes, thermometer, hot plate, watch glass, Pasture pipettes, rubber policeman, boiling chips, labeling tube, small mortar and pestle and 4 glucose urinalysis test strips. This experiment was separated into three different separations. During the first separation the lab groups were to obtain 100 mL of whole milk into a 250 mL Erlenmeyer side arm flask. Then, heat the flask to precisely 40°C and make sure not exceed…