It seems that Joseph worked on his own, there's no record of him working with anyone, and he took the full credit for discovering Trinitrotoluene. Let's move on to the reason Joseph Wilbrand is so famous. In 1856, 18 year old chemist William perkins tried to make malaria medicine from coal tar but accidentally discovered the first synthetic dye, mauve. Seeing Perkins a young millionaire, chemists all over chased two different goals to become rich, searching for new synthetic colors, and finding more coal. Perkins mauve was a aniline dye ( chemical compound of NH2) so other chemists started playing around with similar stuff that had the same molecular shape.
Since the invention of the light bulb by Edison in 1879, humans have been able to light their homes using electricity rather than burning fuels such as oil or gas. However, the style of light bulb that Edison invented (the incandescent light bulb) is very inefficient as only 10% of the energy from the electricity is converted to light; the rest is lost as heat1. Not only does all this wasted electricity cost people a lot of money, it also damages the environment as fossil fuels must be burned to produce the electricity. It has therefore been a challenge for scientists to produce a style of light bulb that is more efficient, i.e. uses a small amount of electricity to produce a great deal of light.
Despite popular belief, the largest amount of garbage waste produced was not in the late 20th century but rather the earlier years of the century. In 1900, the population of New York City was 5.7 million and each person threw out approximately 160lbs of garbage, 1,231lbs of coal, and 97lbs of rubbish per year. Manhattan alone wasted over 612 tons of energy waste per day. As the decades progresses we saw 2,068lbs of waste produced in the 1940’s, 712lbs in the 1960’s and 928lbs in 1999. These numbers show a clear trend in decreasing the amount of waste per person per year in New York City with the waste peaking in the 1940’s.When consulting these numbers we must also take into consideration the economy at which we are viewing.
The first designs included heat detectors and the ionization chamber was not mass produced until the 1970’s and cost around $125 with a few hundred thousand sold per year. However, a major concern that smoke detectors and fire alarms fail to address is electrical fires that occur within the walls of buildings. New developments in the 21st century use piezoelectric transducers to detect the sound of drywall expanding when exposed to rapid heating. This will be especially helpful when incorporated into buildings with extensive electrical systems as they have a higher risk of electrical fires. If I were a designer of fire alarms, I would design a device that had a piezoelectric transducer that was capable of detecting the slight difference in sound between a rapidly heated wall versus a normal wall.
Waste Reduction and Recycling The first ever record of a society taking care of their waste was during 500 b.c. in Athens, Greece. Laws made it unlawful to dispose of waste within one mile of the city walls and in the city. In 1031 Japan started to recycle waste/used paper by first washing the paper into a pulp then adding pressure to the pulp turning them into sheets of pulp, this helps remove some water, finally they dry and cut the pulp to become paper. In 1879 New York City created a material recovery where different materials were sorted and put into grades to be recycled.
All these positive aspects are shielding the truth. In fact, hybrid and electric automobiles are environmentally inefficient because they emit toxins that damage the climate; therefore, the manufacturer should redesign the battery. Generating electricity to power hybrid and electric cars creates some harmful threats to the environment, creating greenhouse emissions to the environment. In 2017, about 90,000 plug-in electric vehicles were sold in the market (Klippenstein). Today, it is easy to find Hybrid or Electric vehicles on the road since these types of
CO is a colourless, odourless gas which is also poisonous when inhaled continuously. In CI engines the CO emissions are far lesser than SI engines due to presence of lean mixture present. By less ignition delay, CO emission is also reduced by turbocharger as more oxygen is available for conversion of carbon to CO2. Biodiesel have more cetane number it help to increase ignition delay and gets complete
Solar radiation, also called global radiation or insolation, refers to the sun 's radiant energy, which came from its nuclear fusion reaction that produces electromagnetic energy. Solar radiation has a spectrum that is near to that of a black body and has a temperature of around 5,800 K. Nearly half of the radiation is in the near-infrared, while some are in the ultraviolet spectrum. Since the late 1950s, some scientists have been measuring its quantity and research indicated a trend of “global dimming” of 1% every decade (i.e. less solar radiation on the surface) (Cohen & Stanhill, 2016, p. 497). Conversely, consecutive studies indicated that solar radiation’s negative trends is reversing as several sites demonstrated “brightening” in the late 1980s and early 1990s (i.e.
Waste Management. Despite the aim of saving the environment, since 2000, reckitt benckiser has increased its total waste to 49%. The company said in its sustainability report was to keep reducing waste since 2000 and also its recycling waste used during operations but the company has done otherwise which generated the increase in hazardous waste to 19%. (Business Sector Media, 2013). Transparency & Disclosure Rb claims that they put all the necessary information needed in the ingredients at the back of the product but it is seen that they hide most of their ingredients or they do not put all of it which leads to lack of transparency and consumers want to know what ingredients are in their products so they could avoid potential dangerous ingredients
Shorter lead times: Owing to its accuracy, it tales lesser time to get a product from its prototype phase to the marketplace. 7. Tapers: This method is useful for cutting long tapers that cannot be produced by other machining methods. 8. Less set up time: It reduces the need for tooling, and this in turn helps reduce the time required to set up.