PPT-X-rays: Dr Gulshan Kumar

MVSc PhD Interaction with matter Xrays are actually photons travelling with the speed of light Interaction How a photon interacts with matter on which it fallsimpinges Matter may be tissuecellsor nonbiological material here we are considered with biological material only. Section . 31-7. Physics 1161: . . Lecture 24. Photons with energy in approx range . 100eV. . to. . 100,000eV. .. This large energy means they go right through you (except for your bones).. What are the wavelengths?. The Discovery of Antimatter!. In 1932 Carl Anderson studied cosmic rays using a “cloud . chamber”. . Charged particles produced in cosmic rays would enter the chamber and leave “tracks”. The tracks would bend in circles because the chamber was placed in a strong magnetic field. X-rays was discover in 1895.. X-ray are shone through the body.. Each kid of tissue lets x-rays through differently.. X-rays are very good at showing up bones.so if you break a bone it will probably be x-rayed.. SWATI VARA. Contents. How X-rays work . Radiation. Indications . DR. ABCDEFGHI. Common conditions. References. How do X-rays work?. X-rays . are.  electromagnetic . waves. Bone, fat, muscles and . tumours. Accidental discovery. First radiograph of Mrs. Roentgen's hand. Roentgen received the first Nobel Prize presented for physics in 1901.. Public viewed discovery as a novelty. Radiographic imaging and therapy important to the medical sciences. Digitally signed by TRIDIB KUMAR BARAT DN: c=IN, st=Uttar Pradesh, pseudonym=bf9046f5dcbe54c40e2fe31689c43540 Date: 2020.08.18 15:12:04 +05'30' Ref: HM V National Dear Sirs , Sub: N e R e Re: 10 Case Western Reserve University,. Cleveland, Ohio.. Co-authors:. Stefano . Anselmi. (. IAP & . Observatoire. de . Paris), . Diana Lopez-. Nacir. . (CERN),. Glenn . Starkman. (CWRU).. FAILURES OF HOMOGENEOUS & ISOTROPIC COSMOLOGIES IN EXTENDED QUASI-DILATON MASSIVE GRAVITY. positions.. Definition:. Diagram:. Diagram:. Diagram:. Diagram:. Ideal situation. Real situation. Diagram:. Photo:. Positive …. aberration. Negative …. aberration. zero …. aberration. Correction:. Radiation dosimetry . is the quantitative description of the effect of radiation on living tissue. . . . The absorbed dose . of radiation is the energy delivered to the tissue per unit mass. . . Used of Absorbed dose. , PhD. Burns are complex inflammatory or gangrenous lesions due to exposure of live tissue to dry or moist heat, chemicals and electricity. . Scalds are burns caused by hot liquids or steam. Superficial (involving epidermis) First degree. MVSc. , PhD. college of veterinary science & animal husbandry, . duvasu. , Mathura (UP). Amaurosis. . is . blindness without any apparent lesion in the eye. It may be temporary or permanent. Possible causes are . MVSc. , PhD. Dept. of VSR, College of Veterinary Science & Animal Husbandry, DUVASU, Mathura- 281 001. Noninvasive technique . Provides cross sectional anatomy of the organs . Based on differences in acoustic impedance of the tissue. . Control panel . Extension arm. Tube head. Control panel. On/off switch. Exposure button. Digital timer indicator. Time set switch. Warning lights and audible signals to indicate when X-rays are being generated. X Rays. Are electromagnetic radiations having wavelength of order of 1. Are highly energetic radiations which are emitted when energetic electrons are made to incident on a metallic target.. Were discovered by German Physicist W.C. Roentgen in1895..