• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Basically, x-rays are like visible light rays. In practice, x-rays expose body patients' organs and structures, so doctors can diagnose the illness faster. However, x-rays

Extracts from this document...

Introduction

Name: Nguyen Vu Thanh Thu                Date: 23/02/2006

Assessment Event 2: Case Study Investigation

  1. Definition

X-rays or Roentgen rays are one of the most important inventions that have changed the medical practice. X-rays are wavelike forms of electromagnetic energy or electromagnetic radiation (Harris, 2000). Basically, x-rays are like visible light rays. In practice, x-rays expose body patients’ organs and structures, so doctors can diagnose the illness faster. However, x-rays are also harmful to the frequently exposed body. Hence, doctors wear a lead protection clothes when taking x-rays photos.

  1. History

There were many researchers in x-rays such as Heinrich Hertz, Nikola Tesla and Thomas Edison, but x-rays’ father was Wilhelm Conrad Roentgen, a German physicist. The x-rays were invented by accident when Roentgen was experimenting with vacuum tubes. On November, 1895, Roentgen was working on a cathode ray generator that was projecting through a glass vacuum tube; then, he noticed a faint green light against the wall.

...read more.

Middle

Knowledgeimage00.png

The x-ray is different from normal visible light because of its energy level of the individual photons. Photons are produced by electrons, which are occupied different energy level or orbitals in nucleus, of an atom. Electrons release energy in the form of photons when drop to a lower energy level. Then, the photons collide with other atoms, and they absorb the energy of photons. When x-ray photons collide with body tissue atoms, it knocks out electrons, if the atom does not have different energy level to absorb and shift the electrons. But a bigger atom with different energy levels, it will absorb all the photon without knock any electrons out.

X-rays exposed body’s organs and bone structure, so that doctors know exactly where the problems are. However, x-rays are harmful to humans’ bodies and lead to the cause and development of radiation sickness. X-rays are ionising radiation.

...read more.

Conclusion

  1. Reference
  • Cluett, J. (2006), CT Scan. About, Inc. [online]. Available at: http://orthopedics.about.com/cs/acupuncture/g/ctscan.htm?term=CAT+scan [Accessed on January, 2006]
  • Harris, T. (2000), How X-rays Work, How Stuff Works [online]. Available at: http://science.howstuffworks.com/x-ray.htm [Accessed on January, 2006]
  • Making X-rays, (2000), USA [online]. Available at: http://www.colorado.edu/physics/2000/xray/making_xrays.html [Accessed on January, 2006]
  • Physics (2005). Wikipedia – the free encyclopedia, USA [online]. Available at: http://en.wikipedia.org/wiki/Physics [Accessed on January, 2006]
  • X-ray (2005) Wikipedia – the free encyclopedia, USA [online]. Available at: http://en.wikipedia.org/w/index.php?title=X-ray&printable=yes [Accessed on January, 2006]
  • X-rays, (2000) NASA [online]. Available at: http://imagers.gsfc.nasa.gov/ems/x-rays.html [Accessed on January, 2006]
  • X-rays, (2000) USA [online]. Available at: http://www.colorado.edu/physics/2000/xray/index.html [Accessed on January, 2006]

        -  -

...read more.

This student written piece of work is one of many that can be found in our GCSE Radioactivity section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Here's what a star student thought of this essay

3 star(s)

Response to the question

The author has made an attempt to describe x-rays, but clearly don't fully understand the topic. They haven't gone into a lot of detail, and jump from topic to topic.

Read full review

Response to the question

The author has made an attempt to describe x-rays, but clearly don't fully understand the topic. They haven't gone into a lot of detail, and jump from topic to topic.

Level of analysis

They don't appear to have understood several of the statements they have made, for example, they say 'X-rays were invented', when they always existed, but had been discovered. They also tend to make seemingly random statements such as 'physics discovered the applications of natural sciences', which simply doesn't make sense! However, they have made a good attempt at describing radiation's effect on atoms and have mentioned the possibility of radiation sickness, showing some broader knowledge of the topic.

Quality of writing

Their quality of written communication isn't particularly good - for example they say 'when a normal light hits an atom', suggesting that the work hasn't been well proof-read. They also don't use many technical terms. However, the subtitles make it easy to understand the topic of each paragraph, and their grammar is mostly correct.


Did you find this review helpful? Join our team of reviewers and help other students learn

Reviewed by dragonkeeper13 09/02/2012

Read less
Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Radioactivity essays

  1. Mutagenesis: The Effect of Radiation on Radish Seeds.

    Since the p value for control versus 50,000 rads was 0.86, the difference in full plant length between the two groups is not statistically different. This indicates that there may be a threshold level of radiation to which seeds must be exposed prior to seeing affects in their growth.

  2. Are mobile phones harmful to our health

    Metal hair clips can increase the EMFs from the working hairdryer. It is best not to use a hairdryer after 7pm as high levels of EMFs near to the head are known to interfere with the body's production of melatonin which helps the body to repair its self.

  1. Ultraviolet radiation and skin cancer

    these energies is given by the following formula E = nhf where n is an integer, f is the frequency of radiation and h is Planck's constant.

  2. X-ray report

    The advantages of x-ray are: * Cheap and easy to use (one image costs �150-�300 opposed to MRI Magnetic Resonance Imaging which is about �300-�400 per image) * X-ray machines are mobile and can be transported through Vans on tour.

  1. research and report

    All objects emit a certain amount of black-body radiation and the radiation level are depends on their temperatures. the higher an object's temperature is, the more infrared radiation will emit by the black-body radiation, for example the surface temperature of a planet is depends on the Incident radiation, the radiation

  2. Nuclear Physics GCSE

    * A chain reaction takes place as the neutrons are able to split other nuclei causing many other nuclear fission. Chain reactions (controlled) can be used to produce electrical energy in a nuclear power plant. An atomic bomb results from an uncontrolled chain reaction.

  1. Nuclear medicine is a field of medicine that uses radioactive substances to diagnose and ...

    When these chemical reactions are irregular, diseases can be easily detected. These diseases can range from anything from heart diseases, thyroid problems, Alzheimer's and cancer. To detect problems in the body, doctors use radio-pharmaceuticals or radioactive drugs.

  2. P2 Assessed Home-Learning Are Mobile Phones Harmful?

    The photograph on the left shows no exposure to mobile phone radiation, and no heating effect. Whereas, the image on the right shows the heating effect after a 15 minute phone call, the effect of heating can have very serious health risks in our brain.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work