This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Kirchhoff was the first to describe qualitatively the types of spectra we observe from luminous ... (Read 51 times)

sabina

  • Hero Member
  • *****
  • Posts: 563
on: Jul 27, 2018
Kirchhoff was the first to describe qualitatively the types of spectra we observe from luminous objects. Describe the three types and their sources.
 
  What will be an ideal response?

Question 2

Objects which have contracted, but are of too little mass to establish thermonuclear reactions in their cores, are ________, which slowly continue to cool.
 
  Fill in the blank(s) with correct word


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jaaaaaaa

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 27, 2018
Answer to Question 1

His first law has dense hot objects creating a continuous spectrum. In the second law, a low density hot gas gives off bright emission lines. In the third law, a cool thin gas in front of a continuous source will absorb some of the energies, creating dark lines in the spectrum.

Answer to Question 2

brown dwarfs


sabina

  • Member
  • Posts: 563
Reply 2 on: Jul 27, 2018
Wow, this really help

skipfourms123

  • Member
  • Posts: 343
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Types of Microbes Types of Microbes
Types and characteristics of stem cells for culture Types and characteristics of stem cells for culture
Types of worms Types of worms
Types of Moths Types of Moths
Types of Hypersensitivities Types of Hypersensitivities
The Three Major Doshas-Basic Constitutional Types The Three Major Doshas-Basic Constitutional Types
Video: Protein Secondary and Tertiary Structures - Animation

For a complete list of videos, visit our video library