Explanation:
The Dalton's atomic theory was proposed by John Dalton in the 19th century through his experiment on gases. Some of his propositions are;
- Atoms are the smallest indivisible particles of matter and they can neither be created nor destroyed.
- Elements have identical atoms that are different from atoms of other elements.
- Atoms vary in size and mass for different elements and this distinguishes them from atoms of other elements.
- Whole number combination of atoms results in the formation of compounds.
- Compounds are formed in chemical reactions when atoms recombine with one another.
You can compare your options with any of the statements above.
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Wow ! They could set up sheets of "slow glass" beside beautiful forests with rivers and squirrels and deer and grassy fields, and load a year of this scene into the glass, and then sell it to people who live next to dirty brick walls or ugly empty lots, and those people could install the slow glass in their windows and have beautiful scenery, until it all worked its way out of the glass.
This is a great idea ! If you possibly can, find and read the sci-fi short story "Light of Other Days" written by Bob Shaw, published in Analog Science Fiction in 1966. It's all about this exact type of glass. I read this story in 1966 and I never forgot it ! (Not yet anyway.)
Answer:
The number of bright fringes per unit width on the screen is,
Explanation:
If d is the separation between slits, D is the distance between the slit and the screen and is the wavelength of the light. Let x is the number of bright fringes per unit width on the screen is given by :
is the wavelength
n is the order
If n = 1,
So, the the number of bright fringes per unit width on the screen is . Hence, the correct option is (B).
Answer:I don't know!!!!I don't know!!!!I don't know!!!!I don't know!!!!I don't know!!!!
Explanation: