What is near and far point of a normal eye? The near point is the nearest point within the eye’s accommodation range at which an object can be positioned and still form a focused image on the retina. The far point is the limit to the eye’s accommodation range. For a normal human eye, this […]
Is human eye better than camera?
Is human eye better than camera? Most current digital cameras have 5-20 megapixels, which is often cited as falling far short of our own visual system. This is based on the fact that at 20/20 vision, the human eye is able to resolve the equivalent of a 52 megapixel camera (assuming a 60° angle of […]
Is it safe to run a dehumidifier constantly all the time?
Is it safe to run a dehumidifier constantly all the time? No, it is not necessary to run your dehumidifier all the time. You should only run your unit when the humidity level is above 50 percent. Collecting water constantly with a dehumidifier does really help you maintain the temperature and relative humidity at an […]
Is the Chernobyl reactor still burning?
Is the Chernobyl reactor still burning? So Is Chernobyl Still Burning? Yes, but it is not what you think. Chernobyl still burns due to wildfires, According to Greenpeace organization wildfire started on April 3rd, due to abnormally hot, dry and windy weather. They are now the biggest fires ever recorded in the Chernobyl exclusion zone. […]
What are chemical properties of steel?
What are chemical properties of steel? Alloy Steel Alloy steels (like carbon steels) contain both carbon and iron, but add additional elements such as silicon, nickel, chromium, manganese, or vanadium. The extra elements added are what provide the additional features and varied chemical properties compared to carbon steels. Is gold a metal? Gold (Au), chemical […]
What is the difference between structural and ball and stick model?
What is the difference between structural and ball and stick model? A molecular formula uses chemical symbols and subscripts to indicate the exact numbers of different atoms in a molecule or compound. A structural formula indicates the bonding arrangement of the atoms in the molecule. Ball-and-stick and space-filling models show the geometric arrangement of atoms […]
How do you measure wind speed without an anemometer?
How do you measure wind speed without an anemometer? A much simpler way to measure wind speed is with a ribbon tied to a stick. Once calibrated, the device will allow the casual kite-flyer or sailor an indication of the wind speed. Place the three ribbons on top of each other and tie them together […]
How do you write a comforting message?
How do you write a comforting message? Examples “We are so sorry for your loss.” “I’m going to miss her, too.” “I hope you feel surrounded by much love.” “Sharing in your sadness as you remember Dan.” “Sending healing prayers and comforting hugs. “With deepest sympathy as you remember Robert.” “I was saddened to hear […]
What is produced when aluminum reacts with hydrochloric acid?
What is produced when aluminum reacts with hydrochloric acid? Aluminum metal reacts with hydrochloric acid to form hydrogen gas and an aluminum chloride solution. In this investigation, you will predict the mass of hydrogen gas produced by a given amount of reactants, then measure the amount, and compare them. Hydrochloric acid is an aqueous solution […]