Search results for “isotope”

08 Isotopes

Different isotopes of the elements can exist. These have a different mass number, but identical proton number. This is explained in the screencast and discussed again at the end using the example of hydrogen. Original: "Wolfgang Dukorn" Original: German. All translations in this video have been do

The Move of Homo Sapiens’ into Tropical Forests

For more Science Videos: https://lt.org/ * In popular culture as in traditional archaeology, the tropical forest has been assumed to represent an environment inhospitable to humans. In this video, PATRICK ROBERTS challenges this view, demonstrating not only that Homo sapiens moved into tropical fore

The Role of Microorganisms in the Marine Nitrogen Cycle

For more Science Videos: https://lt.org/ * What happens in the marine nitrogen cycle? In this video, KATHARINA KITZINGER explains that nitrification as carried out by marine microorganisms involves two distinct processes, with ammonia oxidation resulting in nitrite which is then transformed to nitra

Reciprocal Graphs | Graphs | Maths | FuseSchool

Reciprocal functions are actually extremely important. Isaac Newton deduced that the forces needed to hold planets in orbits is a reciprocal relationship with the squares of their distances. Radioactive isotopes decay reciprocally, and trees lose their leaves reciprocally. VISIT us at www.fusescho

Should I be worried about lead in chocolate?

Some chocolate contains lead. Is this safe? And does the ability to measure minute quantities of lead in chocolate make the product less safe? This week's Risk Bites is about the measurement conundrum -- what do you do when you can measure what's in the stuff you eat to the nth degree? It's not p