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Who invented the lens grinding machine?
Hans and Zacharias Janssen
What is the difference between piston and plunger?
The difference between a piston and a plunger may be understood if you observe what forms the seal that precludes the fluid from passing either the Plunger or Piston. The 'piston' is a steel block equipped with elastomers that makes wall contact with the cylinder wall. As it moves inside the cylinder it wipes the wall and displaces the entire content of the cylinder. In this case the seals form part of the piston. The 'plunger' is a steel block that moves through a hole that is equipped with elastomer seals. The plunger displaces a portion of the cylinder contents, i.e., the volume of the plunger that enters the cylinder. The plunger does not wipe the walls of the cylinder. The seals, in case, are a part of the cylinder block. Umair Aslam Mechanical Engineer PARCO, Pakistan
Can you push the plunger all way through the syringe while your thumb presses on the tip of the plunger why or why not?
No, you cannot push the plunger all the way through the syringe while your thumb presses on the tip of the plunger. This is because the plunger is designed to create a seal within the barrel of the syringe, and pressing on the tip prevents the plunger from moving forward. The pressure created by your thumb would counteract the force needed to push the plunger, making it impossible to fully depress it.
Can you push the plunger all the way through the syringe while thumb presses on the tip of the plunger?
No, you cannot push the plunger all the way through the syringe if your thumb is pressing on the tip. The pressure from your thumb creates resistance that prevents the plunger from moving fully. Additionally, the design of syringes typically only allows the plunger to move to a certain point, ensuring it doesn't come out completely.
Can you get pregnant by a toilet plunger?
No, you cannot get pregnant by a toilet plunger. Pregnancy occurs when sperm fertilizes an egg, typically through sexual intercourse. A toilet plunger does not facilitate any biological process that could lead to pregnancy. It is important to understand that pregnancy requires specific reproductive conditions that a plunger cannot provide.
When were contact lens invented?
2001
Who invented the colored contact lens?
ME (:
When was the plunger invented?
when was the plunger invented and what gave him the idea of inventing
Where was the contact lens invented?
Eye don't know.
Who invented the contact lens?
Californian optician Kevin Tuohy (1919-1968) introduced the first contact lens in 1948.
Who invented the long wearing contact lens?
Andrew Guolette
Who invented the disposable contact lens?
Louis J. Girard
When were the first contact lenses invented?
Californian optician Kevin Tuohy (1919-1968) introduced the first contact lens in 1948.
Who invented contact lense?
Adolf Gaston Eugen Fick invented contact lenses.
Who invented the plunger?
The creator of the common plunger is no other than Vince Vanata
Who invented lens?
In 1888, Adolf Fick was apparently the first to successfully fit contact lenses, which were made from blown glass
Who invented multifocal contact lenses?
The world's first multi-focal contact lenswasinvented by optical research scientist, Stephen Newman in Queensland.
