Making a Night Light
A nightlight provides light at the change of the light- mostly at
night. The definition of light night is so that night passers will be
able to see more clearly, drivers will be able to drive safely and
accidents will be avoided. Nightlight requires LDR (Light Dependent
Resistor). The resistor changes its resistance depending on the amount
of light it receives. LDR is also used to monitor light intensity
level. A resistor, which reduces the flow of current in circuit, is
also needed. 555 microprocessor the brain is also needed to control
the flow of energy from the power supply to the components. Battery
will be used to supply voltage for the circuit.
We detect a light level using a LDR. The LDR then send signal to the
LED providing us with the output of light.
AIM
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The aim of this investigation is to make a nightlight. The light will
be produce using an LED (Light Emitting Diode), which will provide
small bright light.
[IMAGE]LED Diode provides small bright light, and is mostly used in
computer, TVs, remote controls, mobile phones, and on many more
electrical appliances.
[IMAGE]LDR Can be used to monitor light intensity level. It changes
its resistance depending on the amount of light.
[IMAGE]555 microprocessor Looks like spider with its eight legs. It is
a small chip, which controls the flow of energy within the circuit- it
acts like the brain of the circuit as everything as to be connected to
it.
[IMAGE]RESISTOR This reduces the flow of current in the circuit.
Duracell Ultra Alkaline 9V Batteries, 2 Pack
BATTERY 9v battery will be needed to supply voltage to the circuit.
We tested the nightlight by covering up the LDR with a finger; this
makes the light brighten up. However when I removed the finger from
the LDR the LED went off. When there is no light the LED comes on,
however when there is light getting into the LDR the LED goes off.
In the movie Edward Scissorhands, a lot of different cinematic techniques are used. This movie mostly focuses on lighting, usually using darker low-key lighting throughout most of the film to create a darker, creepy tone. Low-key lighting is used mostly in scenes with Edward scissorhands in them, not as much with the girl. A good example of these low-key lighting scenes are the beginning ones, when the girl first enters Edward’s castle. The atmosphere inside is dark and creepy, adding to the already mysterious and dark tone of the movie. Another example of a scene with low-key lighting is the very beginning of the credits screen. The words are displayed in white with the rest of the background as a dark and evil setting. This already gives
The use of symbols and themes within the story serve the purpose to further analysis and to give a more complete understanding to the reading audience. Symbols and themes often complement one another to articulate the author’s purpose. In Elie Weisel’s “Night”, Elie uses both symbolism and theme to develop the story as it progresses. The use of symbolism throughout the story range from the constant reference of fire, the rising of smoke from the chimneys and even the presence of night itself.
An ADS-B emitter will periodically broadcast the required information obtained from the onboard navigation systems. Other equipped aircraft will be able to receive this information and view it on the Cockpit Display of Traffic Information (CDTI).
Having faith in something can help one with survival in tough times. Elie and his family were taken from their home to the concentration camp Auschwitz. His mother and sisters are killed and he and his father go to labor camp. They get little food and are transported to many camps. Elie undergoes operation for a foot injury. In the end his father dies of a sickness and he is liberated. Elie survives the Holocaust through a battle of conscience - first believing in God, then resisting his faith in God, and ultimately replacing his faith with obligation to his father.
when the burner it to be lit. This is because when the lid comes off a
Why did Elie let it happen? What could Elie really have done as an alternative to save his father from dying? He could not have helped his father from being beaten up by the SS guards but he did try to help him from being attacked by his own men in his sleeping barracks. Elie really wanted his father to live. Elie does everything possible to help his father unless it would do harm to himself.
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
Light is both part particle and part wave. Light is “the electromagnetic radiation that may be perceived by the human eye”. It consists of photons, which are massless bundles of concentrated electromagnetic energy. Light’s lower frequency is red, and the higher frequency is blue. Like sound, light has frequencies humans can’t detect. Ultraviolet light is at a frequency higher than violet, and infrared is at the frequency lower than the red of visible light. We get UV (ultraviolet) rays from the sun, and infrared is used in night vision to see better.
Maintenance personnel should have replaced a faulty indicator light bulb for the nose gear. The filament in the bulb was detached from one of the two mountings. That enabled the bulb to illuminate intermittently. When the maintenance personnel serviced the aircraft, they found the light...
Darker specimens will absorb more light and more bright patterns will absorb less light. The detector measures the amount of light that is transmitted through the sample. The various electronic components convert this measurement in% transmittance reading, which is a percentage of source light, which has made its way through the sample.
when Harker comments, " I was not able to light on any map or work
Infrared transmission media and assorted infrared communication technologies work, as one may gather from the introduction, on the medium of non-visible light. Reasoning as to why infrared light is used as opposed to visible light is derived from the fact that visible light is much more susceptible to interference. Thus, we end up with the infrared light spectrum, which is the most reliable spectrum of light that can be used for unguided network communication. When multiple devices are setup to use a direct infrared connection, they communicate v...
Here the circuit brings a advantage for the disabled persons. A remote sensing is used here to control the light intensity. Here the signal is transmitted and received which are commonly used television remotes. This receiver provides negative voltage across across RS1. Thus the current across RS2 flows opposite to the supply current. The summation of the supply current and negative current through drain terminal produces a decrease in total current acrcoss the resistor Rd.
Light bulb is one of the most influential inventions in the word. It makes us work more productive at night and helps us enjoy more activities at night. It significantly change people lives all over the world. The born of light bulb also helped us by making more inventions that related to light, such as phones, televisions, and computes. By using light bulb, we actually reduced the probability of having fire accidents because if we don’t have light bulb, we will use candles instead which can cause fire easily. There are a lot more benefits we get from light bulb, and all of these are credited to Thomas Alva Edison.
The first step is to transform the signal from analog to digital, if the camera itself is not digital already. The data is then processed and based on the results certain actions are taken. The processing occurs in the camera itself, if required hardware for this is built in, or the data is sent to a computer.