logging in or signing up Half-Life grazianir Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1221 Category: Entertainment License: All Rights Reserved Like it (2) Dislike it (0) Added: November 03, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: eoinos1 (3 month(s) ago) to download Saving..... Post Reply Close Saving..... Edit Comment Close By: skuldrive (4 month(s) ago) can I download the presentation? Saving..... Post Reply Close Saving..... Edit Comment Close By: skuldrive (4 month(s) ago) its very enlightening...thanks for the post! Saving..... Post Reply Close Saving..... Edit Comment Close By: nagi_shahin (11 month(s) ago) this is the first time to inter this site sorry Saving..... Post Reply Close Saving..... Edit Comment Close By: xinqi_110 (11 month(s) ago) The dice one was perfect to simulatie the half life Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Half-Life : Half-Life Time it takes for half of a radioactive sample to decay Describes rate of decay Less stable - faster decay Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 50% transmutes into another element Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 50% of the 50% then transmutes into another element Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 50% of the 25% then transmutes into another element This leaves 12.5% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 4 half-lives 6.25% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 4 half-lives 6.25% 5 half-lives 3.125% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 4 half-lives 6.25% 5 half-lives 3.125% 6 half-lives 1.5625% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 4 half-lives 6.25% 5 half-lives 3.125% 6 half-lives 1.5625% 7 half-lives .78125% Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay) 83Bi -1e + ?? 210 0 ? Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay) 83Bi -1e + ?? 210 0 210 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay) 83Bi -1e + 84? 210 0 210 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay) 83Bi -1e + 84Po 210 0 210 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 0.0080 g Bi-210 0.99 g Po-210 day 35 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 0.0080 g Bi-210 0.99 g Po-210 day 35 0.0040 g Bi-210 0.99 g Po-210 day 40 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 0.0080 g Bi-210 0.99 g Po-210 day 35 0.0040 g Bi-210 0.99 g Po-210 day 40 0.0020 g Bi-210 0.99 g Po-210 day 45 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 0.0080 g Bi-210 0.99 g Po-210 day 35 0.0040 g Bi-210 0.99 g Po-210 day 40 0.0020 g Bi-210 0.99 g Po-210 day 45 0.0010 g Bi-210 0.99 g Po-210 day 50 ?Safe Samples? : ?Safe Samples? Each half-life reduces amount of radioisotope Amount never becomes zero After 10 half-lives sample considered nonradioactive Uses of Radioisotopes : Uses of Radioisotopes Radioactive Dating Nuclear Medicine Food Preservation Radioactive Dating : Radioactive Dating Estimates age of very old objects Uses carbon-14 Possible other isotopes Uranium - 235 Potassium - 40 Samarium - 147 Radiocarbon Dating : Radiocarbon Dating Half-life 5730 years Found in all living things Tiny amount Compare to amount carbon-12 Living organisms maintain carbon-14 After dying, carbon-14 decays Nuclear Medicine : Nuclear Medicine X-rays Radiotracers Radiotherapy Nuclear Medicine : Nuclear Medicine X-rays Image inside the body CAT Different angles Injuries related to head or brain Nuclear Medicine : Nuclear Medicine X-rays Radiotracers Tiny amount of radioisotope Path traced through body Short half-life Nuclear Medicine : Nuclear Medicine X-rays Radiotracers Radiotherapy Direct beam at specific area with cancer Fast growing cells vulnerable Food Preservation : Food Preservation Fresh foods susceptible to mold or bacteria Irradiated when packaged Exposed to radiation Food not radioactive Radiation passes through You do not have the permission to view this presentation. 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Half-Life grazianir Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1221 Category: Entertainment License: All Rights Reserved Like it (2) Dislike it (0) Added: November 03, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: eoinos1 (3 month(s) ago) to download Saving..... Post Reply Close Saving..... Edit Comment Close By: skuldrive (4 month(s) ago) can I download the presentation? Saving..... Post Reply Close Saving..... Edit Comment Close By: skuldrive (4 month(s) ago) its very enlightening...thanks for the post! Saving..... Post Reply Close Saving..... Edit Comment Close By: nagi_shahin (11 month(s) ago) this is the first time to inter this site sorry Saving..... Post Reply Close Saving..... Edit Comment Close By: xinqi_110 (11 month(s) ago) The dice one was perfect to simulatie the half life Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Half-Life : Half-Life Time it takes for half of a radioactive sample to decay Describes rate of decay Less stable - faster decay Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 50% transmutes into another element Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 50% of the 50% then transmutes into another element Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 50% of the 25% then transmutes into another element This leaves 12.5% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 4 half-lives 6.25% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 4 half-lives 6.25% 5 half-lives 3.125% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 4 half-lives 6.25% 5 half-lives 3.125% 6 half-lives 1.5625% Half-Life Visual : Half-Life Visual After each half-life, half of the sample changes. START 100% 1 half-life 50% 2 half-lives 25% 3 half-lives 12.5% 4 half-lives 6.25% 5 half-lives 3.125% 6 half-lives 1.5625% 7 half-lives .78125% Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay) 83Bi -1e + ?? 210 0 ? Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay) 83Bi -1e + ?? 210 0 210 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay) 83Bi -1e + 84? 210 0 210 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay) 83Bi -1e + 84Po 210 0 210 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 0.0080 g Bi-210 0.99 g Po-210 day 35 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 0.0080 g Bi-210 0.99 g Po-210 day 35 0.0040 g Bi-210 0.99 g Po-210 day 40 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 0.0080 g Bi-210 0.99 g Po-210 day 35 0.0040 g Bi-210 0.99 g Po-210 day 40 0.0020 g Bi-210 0.99 g Po-210 day 45 Half-Life Again : Half-Life Again 1.00 g of Bi-210 (beta decay to Po-210) 0.50 g Bi-210 0.50 g Po-210 day 5 0.25 g Bi-210 0.75 g Po-210 day 10 0.12 g Bi-210 0.88 g Po-210 day 15 0.062 g Bi-210 0.94 g Po-210 day 20 0.031 g Bi-210 0.97 g Po-210 day 25 0.016 g Bi-210 0.99 g Po-210 day 30 0.0080 g Bi-210 0.99 g Po-210 day 35 0.0040 g Bi-210 0.99 g Po-210 day 40 0.0020 g Bi-210 0.99 g Po-210 day 45 0.0010 g Bi-210 0.99 g Po-210 day 50 ?Safe Samples? : ?Safe Samples? Each half-life reduces amount of radioisotope Amount never becomes zero After 10 half-lives sample considered nonradioactive Uses of Radioisotopes : Uses of Radioisotopes Radioactive Dating Nuclear Medicine Food Preservation Radioactive Dating : Radioactive Dating Estimates age of very old objects Uses carbon-14 Possible other isotopes Uranium - 235 Potassium - 40 Samarium - 147 Radiocarbon Dating : Radiocarbon Dating Half-life 5730 years Found in all living things Tiny amount Compare to amount carbon-12 Living organisms maintain carbon-14 After dying, carbon-14 decays Nuclear Medicine : Nuclear Medicine X-rays Radiotracers Radiotherapy Nuclear Medicine : Nuclear Medicine X-rays Image inside the body CAT Different angles Injuries related to head or brain Nuclear Medicine : Nuclear Medicine X-rays Radiotracers Tiny amount of radioisotope Path traced through body Short half-life Nuclear Medicine : Nuclear Medicine X-rays Radiotracers Radiotherapy Direct beam at specific area with cancer Fast growing cells vulnerable Food Preservation : Food Preservation Fresh foods susceptible to mold or bacteria Irradiated when packaged Exposed to radiation Food not radioactive Radiation passes through