Welcome everybody. Teacher’s Identity SYED SAIFUL ISLAM Senior Asst. Teacher Jessore International School (JIS), Jessore Cantt. Jessore.

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Teacher’s Identity

SYED SAIFUL ISLAMSenior Asst. TeacherJessore International School (JIS), Jessore Cantt. Jessore

Learning Outcomes

Students will be able to define how X – Ray is generated.

Able to Explain the use of X- Ray’.

Able to analyze the good & harmful effects of X-Ray.

Able to utilize X-ray to find out the metal crack in the industrial area.

0o

Can you determine what object was radiographed in this slide?

Class: TenChapter: Twenty FourTime : 50 min.

X-Ray

XX

Todays Lesson

X-Ray

High Electrical Potential

Electrons__+

X-ray Generator or Radioactive Source Creates Radiation

Exposure Recording Device

Radiation Penetrate the Sample

How X-Ray Produces

- Ve potential

+ve HT- ve HT

Fig- X-Ray Tube

X-Rays

Phosphor Layer

Protective Lraye

SubstratePhosphor Grains

How X-ray works on Film

FILM RADIOGRAPHY

Top view of developed film

X-Rays

Phosphor LayerProtective Layer

Substrate

Phosphor Grains

The ray travels along straight lines.

X- ray is a kind of E- magnetic radiation. Its wavelengthto meter. Unit of X-ray is roentgen.

If an X-ray impinges on a metal, electrons are emitted by it.

These rays produce fluorescence on material like Zinc Sulfide, Barium Platinocyanid etc.

Properties of X-ray

Group Work

Find out the the frequency of ‘X’ – Ray

band.

•Technique is used to save human life in medical sector.

•Very useful to inspect and detect metal and luggage's in airport and industrial sector.

•Are used to locate an explosive in a box or leather container.•The custom officials make use of these rays in finding smuggled goods.

Advantages of X-ray/Radiography

Good effects of X’– Ray

1. Can detect broke bone and internal organs of human body

2. Can be used to detect crack of industrial equipment's.

Harmful Effects of X-ray

Excessive use damages human limbs.

It creates radiation hazards.

Remedial action1. Use Radiation Proof Apron. 2. Avoid Radiation area if possible.3. Use Radiation film Badge.

Technicians who works with radiation must wear monitoring devices that keep track of their total absorption, and alert them when they are in a high radiation area.

Survey Meter Pocket Dosimeter Radiation Alarm Radiation Badge

Evaluation

What is X-Ray?What are the main use of X-Ray?What are the harmful effect of X-Ray? What is roentgen?

Home Work

How will you utilize this knowledge in your practical life by learning X– Ray? Explain in detail.

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