A(n) ______________ is any mineral or other precious or semiprecious stone valued for its beauty
Fill in the blank(s) with correct word
gem
Physics & Space Science
You might also like to view...
Shake an object to and fro if you want to judge its
A) mass. B) weight. C) both the same D) none of the above
Physics & Space Science
A soap bubble (n = 1.35) is floating in air. If the thickness of the bubble wall is 115 nm, what visible light wavelength is most strongly reflected?
Physics & Space Science
A microscope has an objective lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective
How far apart are the lenses? A) 20 mm B) 21 mm C) 23 mm D) 33 mm E) 41 mm
Physics & Space Science
Which of these lamps employs semi-conductor technology?
A) incandescent lamp B) fluorescent lamp C) CFL D) LED
Physics & Space Science