1) Natural sources :...

Natural sources : Man is exposed to natural radiation from time immemorial.(c) Internal radiation : Man is also subjected to internal radiation, i.e., from radioactive matter stored in the body These radioactive materials quantities of uranium, thorium, and related substances, and i les on tain is thou in about 2 maraon year on the body as a whole, but may be as high as 70 or 80.Areas exist (e.g., Kerala in India) where there are rock formations containing uranium, it can be as high as 2,000 mrad a year, (ii) Atmospheric radiation: The external radiation dose from the radioactive gases radon and thoron in the atmosphere is rather small : about 2 mrad per year.(b) Environmental : (i) Terrestrial radiation: Radioactive elements such as thorium, uranium, radium and an isotope of potassium (K40) are present in man's environment, e.g., soil, rocks, buildings.Natural background radiation arises from three sources : (a) Cosmic rays : The cosmic rays which originate in outer space are weakened as they pass through the atmosphere.It has been calculated that a commercial jet pilot receives about 300 mrad per year from cosmic radiation (1).to approximately 0.1 rad a year.

All in all, it is estimated that the total natural radiation to
person is subjected comes. to
approximately 0.1 rad a year.

Summarize English and Arabic text online

Summarize text automatically

Summarize English and Arabic text using the statistical algorithm and sorting sentences based on its importance

Download Summary

You can download the summary result with one of any available formats such as PDF,DOCX and TXT

Permanent URL

ٌYou can share the summary link easily, we keep the summary on the website for future reference,except for private summaries.

Other Features

We are working on adding new features to make summarization more easy and accurate

أعلن الاتحاد الأوروبي (EU) تخصيص أكثر من 28 مليون دولار للحد من انتشار أزمة انعدام الأمن الغذائي الح...

يتطلب تحليل عوامل الخطر التي تؤثر على صحة الأطفال في مختلف مراحل نموهم فهمًا لكيفية تفاعل النمو البد...

قال الخبير النفطي والاقتصادي الدكتور علي المسبحي ان الحديث عن التعافي الاقتصادي وعمليات الإصلاح لا ي...

The only comment is that the time of the doctor's availability is up to 430, 5 o'clock only However...

The only comment is that the time of the doctor's availability is up to 430, 5 o'clock only However...

They are serving a very dry steamed chicken breast and not tasty and the fish the should provide th...

A loop of wire that forms a circuit crosses a magnetic field. When the wire is stationary or moved p...

تعد مهارة التواصل من المهارات المهمة التي يعتمد عليها الإنسان، سواء على الصعيد المهني او الشخصي. كما...

The doctor is very brilliant . She told us how to control the sugar , gave advices to my son and tol...

تعتبر وفيات الأطفال واعتلال صحتهم من القضايا الصحية العاجلة التي تتطلب فهمًا عميقًا للعوامل المتعددة...

القطاع الزراعي يعتبر القطاع الزراعي بشقيه الحيواني و النباتي من أهم القطاعات في السودان حيث يضم 80...

يبدو أن نهاية حقبة نتنياهو قد اقتربت فعلا هذه المرة. إدارة ترامب تعتقد أن الضربات الأخيرة على إيران ...