- published: 17 Feb 2014
- views: 6752
Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they formed. The method compares the abundance of a naturally occurring radioactive isotope within the material and the abundance of its decay products, which form at a known constant rate of decay. The use of radiometric dating was first published in 1907 by Bertram Boltwood and is now the principal source of information about the absolute age of rocks and other geological features, including the age of the Earth itself, and can be used to date a wide range of natural and man-made materials.
Together with stratigraphic principles, radiometric dating methods are used in geochronology to establish the geological time scale. Among the best-known techniques are radiocarbon dating, potassium-argon dating and uranium-lead dating. By allowing the establishment of geological timescales, it provides a significant source of information about the ages of fossils and the deduced rates of evolutionary change. Radiometric dating is also used to date archaeological materials, including ancient artifacts.
My first try at a Khan Academy Style whiteboard video. Topic is Radiometric Dating basics. Sorry for the clicking noise as I write on my iPad. Check out my other videos on the limitations of radiometric age dating techniques as well as a work-through of a sample problem set.
How do scientists determine the age of fossils that have been under the surface of the earth for thousands of years? Scientific American Editor Michael Moyer explains the process of radiocarbon dating. -- WATCH more Instant Egghead: http://goo.gl/CkXwKj SUBSCRIBE to our channel: http://goo.gl/fmoXZ VISIT ScientificAmerican.com for the latest science news:http://goo.gl/lHq0CH
A video from the New Zealand E=Mc2 website regarding radiometric dating. Full article and more videos- http://www.eequalsmcsquared.auckland.ac.nz/sites/emc2/videos/cool-kiwi-science.cfm
SciShow explains radiocarbon dating, the best way to date a dead thing! Hosted by: Michael Aranda ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com
THIS VIDEO IS LACED WITH SARCASM (to those who have difficulty sensing it). Scientists admit that radiometric dating, one of the fundamental techniques used to show the earth is billions of years old is flawed!!! The earth is not 4.55 billion years old. Watch and find out just how old it really is. Of course, scientists are always refining their techniques, it's part of of science works. Creationists have pointed to a number of "results" from radiometric dating that prove it doesn't work. Here I go over all the reasons why. Why is there Carbon-14 in some coal. Why did Potassium-Argon dating of the 1980 eruption of Mount Saint Helens give ages on the order of hundreds of thousands of years. To download this video, copyright free, please go to: http://www.mediafire.com/?yytzw...
Radio active dating. I take no credit for this video! All credit goes to CHECK THIS OUT. Original Site: http://www.worshiphousemedia.com/mini-movies/23679/Check-This-Out-Radiometric-Dating
This video answers the following questions: How is radioactivity used to determine the age of a sample? What assumptions are made in radiometric dating? What are some major errors in dates that have resulted from radiometric dating? Moehlenpah, www.doinggood.org
How we know what we know - How do we know radiometric dating works (Episode 3) We have done a lot of research on radiometric dating and this describes how we can figure out half lives of radioactive elements and how we can use it to come to conclusions about our world.