What is normal accommodation of eye?

What is normal accommodation of eye? The young human eye can change focus from distance (infinity) to as near as 6.5 cm from the eye. This dramatic change in focal power of the eye of approximately 15 dioptres (the reciprocal of focal length in metres) occurs as a consequence of a reduction in zonular tension […]

What is the downside of nuclear fusion?

What is the downside of nuclear fusion? But fusion reactors have other serious problems that also afflict today’s fission reactors, including neutron radiation damage and radioactive waste, potential tritium release, the burden on coolant resources, outsize operating costs, and increased risks of nuclear weapons proliferation. What are pros and cons of fusion? List of Pros […]

Why is glass not considered a true solid?

Why is glass not considered a true solid? Glass is not a slow-moving liquid. It is a solid, albeit an odd one. It is called an amorphous solid because it lacks the ordered molecular structure of true solids, and yet its irregular structure is too rigid for it to qualify as a liquid. What is […]

What is the highest possible frequency of sound?

What is the highest possible frequency of sound? That’s about the same as the lowest pedal on a pipe organ. On the other side of the human hearing range, the highest possible frequency heard without discomfort is 20,000Hz. While 20 to 20,000Hz forms the absolute borders of the human hearing range, our hearing is most […]

Can trauma change your DNA?

Can trauma change your DNA? The findings, the authors concluded, supported an “epigenetic explanation.” The idea is that trauma can leave a chemical mark on a person’s genes, which then is passed down to subsequent generations. Instead it alters the mechanism by which the gene is converted into functioning proteins, or expressed. What RNA does […]

Which type of washing machine consumes less water?

Which type of washing machine consumes less water? As a front loader uses less water, there is significant energy or electricity saving as much less water is heated. Also, front loaders dry up the cloths to a significantly higher degree (as less water is used), the dryer cycles are much shorter, thus saving electricity on […]

What is the best time to shift gear?

What is the best time to shift gear? Generally, you should shift gears up when the tachometer is around “3” or 3,000 RPMs; shift down when the tachometer is around “1” or 1,000 RPMs. After some experience with driving a stick shift, you’ll be able to figure out when to shift by the way your […]

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