Is a glass of water transparent or translucent? Materials like air, water, and clear glass are called transparent. When light encounters transparent materials, almost all of it passes directly through them. Glass, for example, is transparent to all visible light. Translucent objects allow some light to travel through them. Does transparent have to be clear? […]
Why do you spin faster when your arms are closer to your body?
Do atoms know they being observed?
Do atoms know they being observed? In order for an observation (or measurement) to be made the object being observed must interact with the observing sensor. Particles are not sentient and do now”know” things. They don’t change their behavior. Does time exist without light? Light is created by the movement of electric or magnetic charges, […]
Does soil hold heat?
Does soil hold heat? Keeping the soil surface clean of vegetation allows it to absorb more heat during the day. Soils have a large heat capacity, so they can capture and store considerable heat during sunny days. Moist, packed soils can be as much as five degrees F warmer than unmowed cover crops during radiation […]
Is it OK to say hearing impaired?
Is it OK to say hearing impaired? Recently, the headline for one of my columns used the term “the hearing impaired” to refer to people with hearing loss. The National Association for the Deaf, for example, is OK with the use of “hard of hearing,” while the Hearing Loss Association of America recommends “people with […]
What is the main magnetic field in MRI?
Did doctors ever endorse cigarettes?
Did doctors ever endorse cigarettes? During the 1920s, Lucky Strike was the dominant cigarette brand. This brand, made by American Tobacco Company, was the first to use the image of a physician in its advertisements. “20,679 physicians say ‘Luckies are less irritating,” its advertisements proclaimed. Did the CDC ever say smoking was safe? This unit—later […]
How can you drop an egg without breaking it riddle?
Who must pay Hawaii state income tax?
Who must pay Hawaii state income tax? Do I Need to File a Hawaii State Tax Return? Resident: If you lived in Hawaii for at least 200 days, you are considered a resident unless you were there for educational or work purposes (military) alone. As a resident, you must file a Hawaii state tax return […]