Author Question: Infrared luminescence is used to do what? a. Detect whether two different inks were used in the ... (Read 146 times)

Mollykgkg

  • Hero Member
  • *****
  • Posts: 529
Infrared luminescence is used to do what?
 
  a. Detect whether two different inks were used in the writing of a document
  b. Reveal writing that has been erased
  c. Prepare ink for thin-layer chromatography
  d. Both a and b

Question 2

The writing characteristics of a person may be altered by whether:
 
  a. paper is ruled or unruled.
  b. pencil, ballpoint, or fountain pen is used.
  c. the author sits or stands while writing.
  d. All of the above


Carissamariew

  • Sr. Member
  • ****
  • Posts: 359
Answer to Question 1

Answer: d

Answer to Question 2

Answer: d



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

For a complete list of videos, visit our video library