Infrared Radiation
When you go outside on a sunny day, you can feel the heat from the sun
on your skin. The heat that you feel has traveled 150 million
kilometers from the sun through space by infrared radiation. Radiation
with frequencies below the red end of the spectrum is infrared.
Infrared is different to convection and conduction because it does not
require particles to transfer heat. There are no particles in between
the space between earth and the sun, but still the infrared radiation
can travel through it.
Every object on earth gives of infrared radiation, even cold objects.
Infrared cameras can be used to detect this. One of the amazing uses
of infrared detectors is tracking rockets. The camera would be linked
to an infrared detector, this can not only tell the direction from
which the radiation comes from, but also how the direction changes.
This information is then given to a computer which then processes it
and hence gives a production controlling the camera and the detector
so the rockets course is followed.
There are many types of detectors, one of them being the tracking
rocket detector, but there is also a detector which has military
applications. Living organisms and engines are at temperatures above
their surroundings, and they emit more infrared. Appropriate detectors
are able to uncover the presence of people or engines, even if they
are totally camouflaged, because of the infrared radiation, hence the
whereabouts of an enemy may be discovered.
A detector that is quite similar may also be used together with an
infrared source to enable one to see in the dark. The infrared
radiation gets reflected from different objects just like light, but
not in the same amount. Hence a device that can receive this radiation
and use it to produce a similar picture with light makes the scene
visible. This detector, has obvious uses, military wise, but can also
be used to observe animals at night, without causing a disturbance. An
example of using infrared for good is in the 1972 Olympic Games.
The sun first presents a problem to Meursault at his mother's funeral procession. Even before the procession embarks, Meursault remarks of the sun, calling it "inhuman and oppressive." Meursault has shown no emotion towards his mother's death and he directs his bottled-up anxiety at the sun. To Meursault, the sun is an influence on all his senses, as he cannot hear what someone else says to him. He pours with sweat, symbolizing the flow of emotions. Meursault constantly thinks about the sun when one would expect him to be mourning his dead mother. He says, "I could feel the blood pounding in my temples," which is strong imagery.
In 1998 a Maryland neurologist, Dr. Christopher Newman, was diagnosed with brain cancer and he could no longer work as a result of his disease. He claimed that the Motorola cell phone he had in 1992 to keep in touch with his patients gave him cancer. Then in 2000, he filed an $800 million lawsuit against several wireless providers including Motorola Inc., Verizon Communications Corp., Bell Atlantic Mobile Systems, and others. Within a month, the U.S. District Judge Catherine Blake dismissed the case due to lack of evidence. This case happened during a time where people were confused about how electromagnetic radiation affects the human body. Fast-forward to today and there is still confusion. A lot of people today feel like they are at risk from developing cancer from electronic devices like cell phones, microwaves, and laptops. That is simply not true.
Imagine with me, if you will a hot, yet pleasant July day. Tom, your next door neighbor, is filling up his bike tire and Jane, your other next door neighbor is in her bedroom talking, well actually listening to her friend, Mary, complain about the B she got on a test.
absorb the energy from the sun, but it does absorb some of the heat energy
Conduction, convection and radiation are the three methods through which heat can be transferred from one place to another. The (www.hyperphysics.com) first method is the conduction through which heat can be transferred from one object to another object. This process is defined as the heat is transmitted from one to another by the interaction of the atoms and the molecules. The atoms and the molecules of the body are physically attached to each other and one part of the body is at higher temperature to the other part or the body, the heat begins to transfer. A simple experiment through which conduction can be understood easily is as follows. First of all, take a metallic rod of any length. Hold the rod in the hand or at any stand made up of the insulator so that the heat does not transfer to the stand. Heat up the one end of the rod with the help of the spirit lamp. After sometime, touch the other end of the end, the other end of the becomes heated too and the temperature of the other end of the rod has also increased. Although only one end of the rod is heated with the spirit lamp, but the other end of the rod has also been heated. This is represents that the heat has been transferred from one end of the rod to the other end of the rod without heating it from the other end. So, the transformation of the heat is taking place. This process is called the conduction. Conduction is a process which is lead by the free electrons. As the conduction happens occurs only in the metallic materials, the reason for it is that the metals has the free electrons and they can move freely from one part of the body to another part of the body. These electrons are not bounded by the nucleus so, they can move easily. And when the temperature of the ...
Most of the rays from the sun are absorbed by water vapor that is naturally in our atmosphere. Water vapor accounts...
As I walk downstairs for breakfast the light reflects off of it at the table. When I am on my way to school in the car, whenever we hit a bump I can feel it jump just slightly off my wrist. The natural light in
Anyone can attest to the positive effects of sunlight, but it doesn’t just help the plants grow, it is necessary to us as human beings. Its effects go far beyond just brightening your mood or giving you a beautiful day at the beach. The amount of sun we are exposed to can have profound effects. Sunlight is necessary for good mental health. It keeps our hormones balanced, affects our daily motivation, and changes our perspectives on the different aspects of life all together. Furthermore, it has a dramatic effect on us physically by keeping our immune system at its best and giving our bodies essential vitamins that we could not live without. The main point is sunlight has a direct effect on a person’s mental wellbeing, physical health, and overall quality of life
Can you feel the heat of the sun beating down on his charred back? Perhaps you
The dull light of the sun somehow manages to kindle my senses in a way I had never seen or felt before. Everything felt like it came to a standstill and the effect of the light made the scene look like one in a painting. The waves break gently into white foam on the black beach. The small crystals in the sand glimmer and twinkle brilliantly against the sunrays. The seagulls ride with the wind and the soft sand cushions my toes.
We have all at some point in our lives used or seen someone use a laser.
As I walk in through the door, I begin to sense the feeling of warmth come over me. This is the feeling I get every time I arrive at my Grandpa's house in Price, Utah. It's where I spent the first five years of my life. This is my second home.
It was one of those days where you’re glad to be awake early in the morning, before the afternoon gets scorching hot. The feeling of the cool breeze gently caressing your arms and legs is always something to look forward to, and many people would be swayed into taking a nice walk outside under the trees.
effect. A lot of the rays from the sun are absorbed by water vapor that is naturally in our