Radiometric dating services
Every time an image is acquired on film or by a sensor, its sensitivity to the magnitude of the electromagnetic energy determines the radiometric resolution. The illustration on the left shows the image presented in two bits, or 4 shades of grey.
The radiometric resolution of an imaging system describes its ability to discriminate very slight differences in energy The finer the radiometric resolution of a sensor, the more sensitive it is to detecting small differences in reflected or emitted energy. The illustration on the right is the same but presented in 8 bits or 256 shades of grey, which provides more details.
The majority of the lesson focuses on radiometric dating, including an activity where students date their own "rocks and fossils".
What dangerous gas is produced by the decay of radium-226? Practice: Americium-241 is a radioactive isotope used in smoke detectors. Summarize: In general, how can you determine the mass number of the daughter product after alpha decay has taken place? Most of the helium used to fill balloons and blimps must be extracted from Earth’s crust. Activity B: Beta decay Get the Gizmo ready: • Click Reset, and turn off Show equation. For the simulated substance, every 10 seconds represents one half-life. Real radioactive samples will contain billions of radioactive atoms. Use the probe to measure how long it takes for exactly one-half of the original radioactive atoms to decay. On the next row, predict the number of radioactive atoms that will be present at each time. Half-life 0 1 2 3 4 5 Time (seconds) Predicted # radioactive atoms Actual # radioactive atoms 4.
This collage shows the difference in the level of detail between the two representations.
Imagery data are represented by positive digital numbers which vary from 0 to (one less than) a selected power of 2. The maximum number of brightness levels available depends on the number of bits used in representing the energy recorded.
The lab also provides stable isotope analyses on a standalone basis.
Aside from radiocarbon dating, ISO/IEC 17005-accredited Beta Analytic also provides biobased/renewable carbon content testing to manufacturers, product distributors, and researchers worldwide for biobased products, biofuels, waste-derived fuels and their combustion emissions (CO2 gas).
Activity B: Measuring half-life Get the Gizmo ready: • Click Reset. Apply: Suppose you found a material in which 12.5% of the original radioactive atoms were present. Paste the images into a blank document, and label each image with the half-life.