The Light Bulb and How It Works
When examining a light bulb, one can describe the light bulb as a
device that provides light when it is switched on from its power
source. It is used when our natural source of light (the sun) happens
to reduce its output. We as humans use it in order to see when it is
dark.
The light bulb works by electricity flowing through the wire causing
it to heat up. The heat makes it glow. It heats up because of
resistance. As electricity passes through an object, the substance it
is passing through tries to hold on to the electrons.It is as the
electrons force through that some of the force present is absorbed and
given off as heat.As the filament heats up, it gives off light.
The electric current which travels through a coiled tungsten wire in
the bulb from the power source can most likely be modelled by a
computer, illustrating how the current is carried in a wire by bumping
electrons off, the atoms or molecules that make up the wire. This
bumping creates energy thus creating heat and furthermore light. A
fundamental problem which one can account for is that fluctuations in
power output result in damage to the light bulb.
As touched upon briefly the power source too can be regarded as a
setback. For instance if there is too much current flowing through the
bulb the filament can burnout and thus damaging the bulb further
making it inoperative. On the other hand however if there is limited
flow of current running through the light bulb, there is very little
light emitted making the light bulb inefficient in places where
maximum light is needed. Another problem is that the filament must be
of a certain thickness in order to compensate with the rate at which
power is being supplied.
The glass shell being free of all oxygen and being sealed at all ends
is vitial, as tungsten if comes in contact with oxygen causes it to
egnite with disasterous concequences.
What do events like the assassination of John F. Kennedy, The Challenger space shuttle disaster, and hurricane Andrew that shook Miami have in common? All these events can be remembered by the people who experienced it due to flashbulb memory. Flashbulb memories were defined by R. Brown and J. Kulik (1977) as vivid, detailed, and long-lasting memories for attributes of the reception context of public news (Curci, A., & Lanciano, T., 2009). The people who experience such huge events are certain that their flashbulb memories are very accurate and can give in detail what occurred to them in those events (Schwartz, 2013). Furthermore events that generate flashbulb memories are usually very surprising and emotionally arousing and are perceived by the subject as personally consequential (Emotion & Memory 1993). But not all memories need to be negative and tragic. Events like the first day of first grade, your first romantic kiss, your first day at a new job, or recital of your wedding vows can also be described as flashbulb memories (Schwartz, 2013).
fluctuating due to canals that have been dug to redirect water, which prevents the natural filtering
one simple reason for why it was introduced. It was not a new idea as
the bulb burns out. The filament of a bulb is a very thin wire and
easier to determine if the sun is hitting the water or not. It must be hitting a
Also it is used in many other areas such as toaster, microwave oven, handwriting recognation, helicopter flight control system, etc. (Ural, 2006). Application areas are getting more more by the time.
The nature of humans is to seek happiness, which may possibly result in chasing illusions rather than settling for harsh realities. In “The Lamp at Noon”, Sinclair Ross uses the wishes of the characters Paul and Ellen, as well as their difficult situation to contrast the concepts of dreams and realities. Specifically, Ross displays the gap between dreams and realities through Paul’s hope for the land to return and his ideal of being a successful farmer to explain that what outcomes may occur if one neglects reality and blindly pursues their dream. Paul wishes to stay on the farmland and believes that the land will be able to cultivate crops. However, Ellen persists that where they are living is a “desert” and reminds him of “the lamp lit at noon” (Ross
to actually fix the problem, so in most cases it has effects that we cannot
Electricity is not only used to turn on lights, or make things work, it's also being used in automobiles and other motor-run things. Electric motors also conserve energy and isn't as harmful as a diesel engine or motor engine. Electric motors date back all the way in the 1800's when Thomas Davenport built the first real working electric motor. He used a spinning wheel technique and levers that move back and forth repeatedly. His work ended up being used to move trolleys, but not till 50 years after his death. The picture on the right is an example on how his electric motor looked like. This was used to transport thousands of people each day to work, cities, stores, ect.
to figure out how they work and the history behind them before we start to use
Refraction of Light Aim: To find a relationship between the angles of incidence and the angles of refraction by obtaining a set of readings for the angles of incidence and refraction as a light ray passes from air into perspex. Introduction: Refraction is the bending of a wave when it enters a medium where it's speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media. The amount of bending depends on the indices of refraction of the two media and is described quantitatively by Snell's Law. (Refer to diagram below)
It is very useful especially when comparing different fuels and substances to see which ones release more energy when they are burned. This can be helpful in knowing, especially with all of the new vehicles and machinery being built, maybe they will find a better fuel through this method. When the fuel is burned, the temperature change is measured. They then simply take the amount of fuel that was burned and compare it to the change in temperature to calculate the enthalpy change for the reaction.6. Also, many fuels produce a higher heat then others, so obviously the higher heat producing fuel yields more products. More products means a better product for the dollar which is better economically for everyone.
...hat it could also be used to show measurements, be used in science, and that it could be used to ride in things such as hot air balloons. It could be used to find measurements because you could be trying to fill up the balloon just to see how tall or how wide it can get, and then measure it. It could also be used in science for that reason, and if you were testing the acidity in something, and having it fill up with something other than air or helium.
slow down the depletion of the ozone layer by taking carbon dioxide out of the air.
It was Sunday morning, and I just arrived home from the Flea market. The day was uneventful; all I got from my morning expedition was a small lamp. As I laid down my find on the table, I noticed some smudges on the lamp, which I rubbed off with a damp towel. Long, before I knew it, a swirl of white cloud billowed from the lamp that slowly formed into a genie. The genie looked exactly the one from the story of Aladdin and the magic lamp. As expected, the genie spoke, "Thank you for letting me out and for that I 'll grant you three wishes." I looked around the room and saw the words 'Ancient Greece ' on one of the brochures on my desk. Caught by surprise, I asked, "How about a trip to Ancient Greece?”