Author Question: The Greek astronomer who assigned the stars to six magnitudes was named ______________. Fill in the ... (Read 106 times)

sammy

  • Hero Member
  • *****
  • Posts: 818
The Greek astronomer who assigned the stars to six magnitudes was named ______________.
 Fill in the blank(s) with correct word

Question 2

When the energy state of an atom changes by E, the frequency of the photon emitted or absorbed is calculated by dividing E by ______________.
 Fill in the blank(s) with correct word



jxjsniuniu

  • Sr. Member
  • ****
  • Posts: 343
Answer to Question 1

Hipparchus

Answer to Question 2

h, or Planck's constant



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

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.

For a complete list of videos, visit our video library