A clear curved piece of glass or plastic that is used in eyeglasses, cameras, and telescopes to make things look clearer, smaller, or bigger is called?
What is lens
100
Answer to a multiplication problem?
What is product
100
12 inches equals?
What is 1 foot
100
Instead of forks, Japanese people eat with?
What are chopsticks
100
What is a meniscus lens?
What is one side is concave, one side is convex
200
What is the difference in large radius vs. small radius?
What is the smaller the radius the more curved the surface, the larger the radius the less curved the surface
200
Answer to a division problem?
What is quotient?
200
3 feet equals?
What is 1 yard
200
The age when Japanese young people become legal adults?
What is 20
200
Having a surface that is curved or rounded outward?
What is convex
300
A term indicating a flat surface in the subject of optics?
What is plano
300
GCF stands for?
What is greatest common factor
300
36 inches equals?
What is 1 yard
300
True or False: it is good to tip your waiter in Japan
What is false
300
Having a surface that is curved or rounded inward?
What is concave
400
The removal of sharp edges by grinding?
What is chamfer or bevel
400
Different fractions that represent the same amount are called?
What is equivalent fractions
400
A measuring tool that is a foot long?
What is ruler
400
In Japanese, Chinese characters are called?
What is kanji
400
What are the two types of coatings we use on lens?
What is broadband and magnesium fluoride
500
The portion of the lens that must meet print specification? Any defects outside will not affect the function of the lens.
What is clear aperture
500
The top and bottom numbers of a fraction are called?
What are numerator and denominator
500
A measuring tool that is 36 inches long?
What is yardstick
500
The number of main islands that make up Japan?
What is 4
500
A straight line passing from side to side through the center of a body or figure, especially a circle or sphere is called?