90% R&D is used for the quality increase from 90% to 100%.
Yes; pretty much. In theory, you could build a tracked bicycle. However, it might not qualify as a bicycle anymore; there would probably still be wheels keeping the tracks tight.
The general consensus is yes, Albert Einstein conceived of his theory of relativity while riding his bicycle. It is said that: "while riding his bicycle at night Einstein observed that [the] beam cast from his headlamp always traveled at the same speed whether he was cruising at a quick speed or coasting to stop." Thus the theory - light from a moving source has the same velocity as light from a stationary source. Unfortunately, this information is merely a "tale." It has not been historically proven.
No, Albert Einstein did not invent the bike. The modern bicycle was developed in the 19th century by various inventors and engineers. Einstein was a physicist known for his theory of relativity and contributions to science, not for inventing the bicycle.
Most bicycle owners maintain their own bicycle. But, a bicycle shop may be willing to maintain a bicycle, if you ask.
The bicycle squeaked. I've had a brand new bicycle for my birthday. I go to school on my bicycle.
The noun 'bicycle' functions as the subject of a sentence or clause, and as the object of a verb or preposition: The red bicycle was very cool. (subject of the sentence) I bought a basket for my bicycle. (object of the preposition 'for') The noun 'bicycle' used as adjective, called an attributive noun: There is a bicycle lane on the road where I live. The word 'bicycle' is also a verb: We often bicycle to the library.
A bicycle fork is the portion of a bicycle that holds the front wheel and allows the rider to steer and balance the bicycle.
invention of bicycle
Bicycle's.
At a bicycle shop!
Who is the father of bicycle
A bicycle tire is a tire which fits on the wheel of a bicycle or similar vehicle.