« previous next »

Author Question: Describe the appearance of each of the three types of spectra described by Kirchhoff's laws. ... (Read 117 times)

dollx

  • Hero Member
  • *****
  • Posts: 558
on: Jul 27, 2018
Describe the appearance of each of the three types of spectra described by Kirchhoff's laws. Describe how each of the three types of spectra is formed.
 
  What will be an ideal response?

Question 2

Tycho Brahe's greatest contribution to astronomy was
 
  a. his model of the universe.
  b. his telescopic observations.
  c. his discovery of three laws of motion.
  d. his 20 years of careful observations of the planets.
  e. his model of the universe and his telescope observations.


okolip

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Jul 27, 2018
Answer to Question 1

(1) A hot solid, liquid, or dense gas emits electromagnetic radiation at all wavelengths and produces a continuous spectrum.
(2) An excited, low-density gas produces an emission, or bright-line, spectrum containing emission lines.
(3) A light source viewed through a low-density gas produces an absorption, or dark-line, spectrum containing absorption lines.

Answer to Question 2

d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Types of computers (A) Laptop (B) Notebook (C) Desktop (D) Smartphone. Types of computers (A) Laptop (B) Notebook (C) Desktop (D) Smartphone.
Common Types of Losses Common Types of Losses
Types of cellular receptors: (a) Drug binds to the receptor opening channel. (b) Drug binds to the ... Types of cellular receptors: (a) Drug binds to the receptor opening channel. (b) Drug binds to the ...
Types of Dyslipidemias Types of Dyslipidemias
Various types of integumentary conditions. (D) Psoriasis Various types of integumentary conditions. (D) Psoriasis
Describe the development of atherosclerosis, including its role in the risk of heart disease Describe the development of atherosclerosis, including its role in the risk of heart disease
Video: Introduction to Spirometry

For a complete list of videos, visit our video library