Category: Physics

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 […]

Is ocean acidification related to global warming? But it does. Ocean acidification impacts important sectors of the US economy, like fisheries and tourism, it affects food supply, and makes global warming worse by hindering the oceans’ ability to absorb CO2. For communities that depend on coastal resources, their way of life and cultural identity are […]

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 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 […]

How can I make my body transparent? While tissue clearing has been used for decades to see through tissues, the new approach used by Dr Ertürk and his colleagues also makes it possible to make bones transparent too. It builds on a technique known as 3D Imaging of Sovent-Cleared Organs, or 3DISCO. What body parts […]

What type of image is formed by a concave mirror? Concave mirrors form both real and virtual images. When the concave mirror is placed very close to the object, a virtual and magnified image is obtained and if we increase the distance between the object and the mirror, the size of the image reduces and […]

How much does a gallon of gas cost 2020? Americans are likely to pay an average of $2.60 a gallon in 2020, according to fuel savings app GasBuddy’s annual forecast. On the whole, drivers haven’t paid more than $3 nationwide since 2014, when prices averaged $3.36, according to the U.S. Energy Information Administration. How much […]

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? 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 […]

What is transmitted when white light passes through a green filter? The filter selectively transmits the red and blue portions of the incident white light spectrum, but absorbs most of the green wavelengths. As discussed in our section on primary colors, the color magenta is obtained by subtracting green from white light. What does a […]