BhadBarbie BhadBarbie

26-03-2018
Advanced Placement (AP)

contestada

how was it possible for scientists to discover the elements helium on the sun before it was discovered on earth

Respuesta :

Bladerunner1976 Bladerunner1976

26-03-2018

Scientists used the emission spectra from the Sun to identify the elements of Hydrogen and Helium.

Answer Link

27-03-2018

Emission Spectra, using a spectrometer. This showed colored gas that seemed to be unearthly. Scientists later discovered this was Helium.

Answer Link

Otras preguntas

the directions on a bottle of vinegar say "mix 1 cup of vinegar with 1 gallon of water to make a cleaning solution". the ratio of vinegar to water is 1 to 16. H

Put th verbs from the brackets in the correct tense from. a)They (to furnish) the flat all day. b)Myelder brother (to decorate) his room sisce morning. c)When

What normally prevents the membranes of the alveoli from sticking together during expiration?

what is 2.75 rounded to the nearest hundredth

Millie has a box of 1 hundred cubes. She also has a bag of 70 cubes. How many trains of 10 cubes can she make?

A race is 10 kilometers long. Markers will be placed at the beginning and end of the race course and at each 500 meter mark. How many markers are needed to mark

Egyptian leader who laid the foundation for modern Egypt

Why is it rare for the soft part of an organism to become a fossil?

A blood clot forms around a fibrous network of protein. What is the protein? A. Fibrinogen B. Fibrin C. Thrombin D. Thrombok

The ratio of adults to children is 8:5 of 390 people