Hello people!
Today I am going to speak about two inventions that have contributed most to make our lives easier.
For me the light bulb and the computer are the two most important inventions of my life.
The Light bulb: We all know that Thomas Edison was the inventor of a light bulb in 1879 but the first electric light was made in 1800 by Humphry Davy.
I choose the light bulb because without it we could not see when it's night, or we could not read. Also now use for work in school with the electrified. And for me was very interesting to work with electrified. Neither exist the flashlight. And the nights would be boring because we couldn`t see anything.
There are diferent types of light bulbs like:
-Electrical terms: the important electrical operating characteristics of a light are yoltage and wattage.
-Incandescent lamps: these are often called General Lighting Service lamps and are the least efficient. the will produce about 15 lumes of light for every watt of electricity used.
-Compact Fluorescent Lamps: these lamps will produce the same light as a incandescent lamp but require only 20% of the power.
-Compact Fluorescent wattage/Incandescent wattage: the twiat bulbs are more efficient and smaller than the u shaped bulbs and will fit into any light that uses an incandescent bulb.
-Halogen bulbs: these lamp will produce about 35 lumens per watt.
-Fluorescent tubes: these lamps are very efficient and it produce about 70 lumens per watt, and they have a life of about 10.000 hours.
-Led Lighting: future development could see the output of 200 watts per lumen.
This is the estructure of a light bulb:
Outline of Glass bulb
Low pressure inert gas (argon, neon, nitrogen)
Tungsten filament
Contact wire (goes out of stem)
Contact wire (goes into stem)
Support wires
Stem (glass mount)
Contact wire (goes out of stem)
Cap (sleeve)
Insulation (vitrite)
Electrical contact
You could speak about different types of light bulbs nowadays.
The Computer: Was invented by Charles Babbage. I choose the computer because was very interesting machine. with the computer you can speak with your friends, upload fhotos and you can do your own blog. if you haven`t know how do you have to do exercises you can`t asked to your firends. You play games. but this is to pas the time. Also you cant take the imporafation you can`t find in a diccionary to do ther works.
There are diferent types of computers nowadays like:
-Desktop computers: The most common computer used in today`s world are the desktop computers which were specially bulit for personal use be it at home or work I think, because these computers are everywhere like; from one office, to your hause, schools, universities...
-Workstations: I think that a workstation is a specialized, single user computer that typically has more power than a desktop computer. these machines are most of the work of scientist.
-Notebook computers: Notebook computers is approximately the size of an 8.5-11 inch notebook and can easily fit inside a briefcase. In my opinion I think that these computers are used in eateries, cafes, at the work place and in aducation institutions.
-Tablet computers: Tablet PC´s are some of the more ever developments in portable, full featured computers.
-Handheld computers: these personal compueters are computing devices and I think that it can enter in your hand.
-Smart phones: these type of computers are phones that have a processing unit attached to act as a handheld computer.
-Supercomputers: I think that as a name said are the most fastest, and expensive modern computer systems.
-Mainframe computers: these type of computers are used in large organization like banks, where many people frequently need to use the same data.
-Minicomputers: are small sied computers which their capabilities between the range of a personal desktop computer and a mainframe.
