1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PtichkaEL [24]
3 years ago
6

What type of electromagnetic wave is used in security pens?

Biology
2 answers:
kondaur [170]3 years ago
4 0

The answer is; UV (ultraviolet)

The security pens use UV light to illuminate some marking on an object,such as a watermark, to identify its authenticity or owner. The markings are usually invisible to the naked eye under visible light. The marks are only visible when illuminated with UV light. This is because the marking is made of a fluorescent material that absorbs light of a  shorter wavelength (this case UV) and emits a longer wavelength (this case visible light).


aivan3 [116]3 years ago
4 0

The ultraviolet rays are a type of electromagnetic wave that is used in security pens.

Further Explanation:

The electromagnetic waves are propagated by instantaneous periodic variation of the magnetic field and electric field intensity. They include visible light, infrared, gamma rays, radio waves, and ultraviolet rays. When the spectrum of light is passing through the prism, then they differentiate into a different color of the rainbow.  

Ultraviolet lights are invisible to naked human eyes. The primary source of ultraviolet light is a sun that is differentiated into three different forms UV-A, UV-C, and UV-B.  UV-B and UV-C are most harmful and can cause cellular damage to the living organism.UV lights are used in security pens to highlight the marking on the object for security purposes or to identify the owner easily. They can easily absorb light of short wavelength and have a higher frequency. Their wavelength is shorter than the visible lights.

Learn more:

1. Learn more about collagen disease brainly.com/question/2947334

2. Learn more about subatomic particle brainly.com/question/3176193

3. Learn more about electron brainly.com/question/1832385

Answer Details:

Grade: High School  

Subject: Biology

Topic: Radiations

Keywords:

Ultraviolet rays, spectrum, visible light, infrared, differentiate, UV-A, UV-B, UV-C, light, higher frequency, human eyes, pen, security, sun.

You might be interested in
Which trophies level contains the most energy?
AleksAgata [21]

Answer:

producers

Explanation:

All the energy comes from the sun. a small amount of sunlight energy is trapped by green plants and used in photosynthesis to form organic materials in plants that are sources of food to the rest of the animals. Animals get  this energy when they feed on plants directly like the herbivores or indirectly like the carnivores.

4 0
3 years ago
How can you fix thermal pollution?
Feliz [49]

Answer:

Heated water from the industries can treated before discharging directly to the water bodies.

Explanation:

please mark brainliest

6 0
3 years ago
Which process is driven by the energy from earth’s interior?
tensa zangetsu [6.8K]

Answer:

solar energy

Explanation:

Solar energy mainly drives the processes that happen at the earth's surface, like the water cycle, wind, weathering, erosion, and growth. Energy from inside the earth is responsible for internal processes like volcanism, metamorphism, and plate tectonics.

6 0
3 years ago
If the pH of a solution is increased from pH 5 to pH 7, it means that the
____ [38]
Find the average of the list of numbers.
- 18, - 29, - 17, - 12find the average of the list of numbers.
- 18, - 29, - 17, - 12find the average of the list of numbers.
- 18, - 29, - 17, - 12
8 0
3 years ago
HURRY PLEASE HELP ASAP!!!!!!!!! THIS IS URGENT
deff fn [24]

Answer:

1. domestic use

2. water availability

3.habitat loss

4. war

5. growing in size

Explanation:

6 0
3 years ago
Other questions:
  • Nucleotides are the basic unit of which macromolecules ?
    8·2 answers
  • An organism is found that has the following traits produces seeds has a vascular system multicellular what kingdom does this org
    10·2 answers
  • PLSSSSSSSSSSSSSSSSSSSS HELP I'LL GET AN F
    8·2 answers
  • How does the light reaction of photosynthesis affect Earth’s supply of oxygen?
    11·2 answers
  • Need before 5pm today
    10·2 answers
  • Describe the interaction between the digestive and circulatory system of the earthworm.
    5·1 answer
  • SOMEONE PLEASE HELP ME WITH THIS ILL GIVE YOU BRAINLY IF YOU GET IT RIGHT PLEASE ONLY ANSWER IT IF U KNOW THE ANSWER!!!
    15·1 answer
  • Rearrange the information into a food chain. Label the role of each organism in the chain.
    14·1 answer
  • I really need help on the evolution quiz ​
    11·1 answer
  • A group of students wants to study the rate of photosynthesis under various conditions. They use a blender to mechanically disru
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!