Sentences with phrase «bubble levels accurately»
similar to the KeyFit, two RideRight bubble levels accurately indicate correct seat angle in each rear - facing and forward - facing modes.
http://bestbabygearlab.com/ Not exact matches
However, air bubbles trapped in ice don't preserve argon levels accurately.
Also, given the atmospheric CO2 measurements at South Pole range between 246.59ppm - 521.48 ppm I don't see how the trapped CO2 in the ice - core bubbles could accurately represent the back - ground level.
For example, ice cores taken in various locations around the world (Greenland and Antarctica, for example) are excellent proxies; gas bubbles containing CO2 trapped in ancient ice can be measured, and the age can be determined very accurately (by counting the seasonal ice layers, or measuring the isotope levels of oxygen).