« previous next »

Author Question: What was the major innovation that Augustin-Jean Fresnel discovered? A. A thinner lens that ... (Read 71 times)

misspop

  • Hero Member
  • *****
  • Posts: 540
on: Aug 27, 2018
What was the major innovation that Augustin-Jean Fresnel discovered?
 
  A. A thinner lens that required less material
  B. A lighter lens than was currently used
  C. A brighter lens that was currently used
  D. All of these choices

Question 2

The basic unit of stage lighting today is:
 
  A. The electric incandescent bulb
  B. The limelight
  C. The carbon arc
  D. None of these choices


Eunice618

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Aug 27, 2018
Answer to Question 1

D.

Answer to Question 2

A.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

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

Major types of microbial cell shapes. Major types of microbial cell shapes.
How Niko Tinbergen discovered the digger wasp's nest-locating behaviour. How Niko Tinbergen discovered the digger wasp's nest-locating behaviour.
Jean Dubuffet, Corps de Dame. Jean Dubuffet, Corps de Dame.
The crude oil refining showing most of the major steps and processes. The crude oil refining showing most of the major steps and processes.
The major events associated with the three phases of energy metabolism: the cephalic, absorptive, ... The major events associated with the three phases of energy metabolism: the cephalic, absorptive, ...
Coronary arteries and major vessels (A) anterior (B) posterior. Coronary arteries and major vessels (A) anterior (B) posterior.
Video: Role of complement proteins

For a complete list of videos, visit our video library