that all objects emit infrared radiation as long as the object is above absolute zero (Kelvins). The cameras that can see and distinguish temperature are called‚ “thermal imagers.” These imagers convert the perceived radiation into scaled colors relative to its temperature and create a different color per area. The basis to how these camera can see this radiation is that objects have blackbody radiation (Seffrin). Objects that can absorb light would also emit radiation (Rossing‚ 129). The emittance
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matter Q.1. State the dependence of work function on kinetic energy of electrons emitted in a photocell. If the intensity of incident radiation is doubled‚ what changes occur in the stopping potential and photoelectric current? Q.2. How does the maximum kinetic energy of the emitted electrons vary with the work function? Q.3. the frequency of incident radiation is greater than the threshold frequency in a photocell. How will the stopping potential vary if frequency is increased‚ keeping other
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Nuclear weapons cause unimaginable death and destruction. Without a doubt‚ these are the most powerful weapons mankind has ever built. However‚ there is also a scientific side to this weaponry which Teddy Roosevelt may have indeed called very big sticks. Nuclear weapons work by releasing the enormous amounts of energy that are contained in the bonds of atoms. The bonds of atoms can be broken in two ways. The first way is by fission‚ and the second way is by fusion. Fission works by the splitting
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bomb testing around the equator. Even though it was a big step forward for the United States‚ when it comes to developing nuclear bombs. Consequently‚ the bomb testing resulted civilians to move from their hometown‚ furthermore left them exposed to radiation as a result causing them several unwanted diseases and genetic mutations. The worst part is at times‚ the civilians were left with no right to express their opinion nor feelings towards the bomb testing. That’s when Jane Dibblin a British journalist
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Information Paradox: An Introduction”). The Quantum theory is very important because it is believed to be the law of nature so‚ something opposing the law of nature is a huge deal. The information paradox breaks both the rules for one it states that the radiation that black holes emit is copied from what enters the black holes. It is also breaking the rule that information is never truly lost because in the theory of information paradoxes it states that‚ “The information permanently disappears‚” (“Black Hole
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the rays aren’t accurate and continue moving through the body until they exit‚ some of them are absorbed into surrounding healthy tissue. The most common areas of the body that are damaged by this type of radiation therapy is the bladder and other surrounding organs (Proton Therapy). Radiation itself is a known cause of cancer and this risk may outweigh the benefits for some when selecting a treatment option. Aside from potentially damaging normal functioning tissue‚ X-ray therapy causes minimal
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involves the use of x-rays‚ a form of ionizing radiation‚ CT scan is used to detect and diagnose the presence and recurrence of tumors in human body and also provides the stage of a cancer. Several case studies have shown that CT scan can be effective in both colorectal cancer and lung cancer screening. Exposure to ionizing radiation is caused to increase the risk of cancer. Children may be at higher risk because usually children are more sensitive to radiation than adults and have a longer life expectancy
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The surgery is followed up with RAI to completely eliminate metastasized thyroid cancer cells that remain within the patient’s body. External beam radiation is also used to treat or prevent the growth of follicular and Hurthle cell cancers in the neck area. Medullary Thyroid Cancer The third most common thyroid cancer type‚ medullary thyroid cancer‚ makes up about 5% to 10% of thyroid cancer cases.
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Prostate Cancer The prostate is a walnut-sized gland that is involved in the production of semen. It is located below a man’s bladder‚ in front of the rectum. Prostate cancer is the abnormal growth of cells in the prostate gland. CAUSES The exact cause of this condition is not known. RISK FACTORS This condition is more likely to develop in: People who are older than 65 years old. African Americans. People who are obese. People with a family history of prostate cancer.
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Throat Cancer Each year‚ smoking kills more people than AIDS‚ alcohol‚ drug abuse‚ car accidents‚ murder‚ suicide‚ and fires---combined! The use of tobacco increases the risk of contracting throat cancer. Throat cancer is one of the most prevalent cancers within the United States. Cancer of the larynx (or voice box) is a disease in which cancer (malignant) cells are found in the tissues of the larynx. The larynx is a short passageway shaped like a triangle that is just below the pharynx in
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