Category: Physics

What happens when the frequency of a photon decreases? The energy of the photon depends on its frequency (how fast the electric field and magnetic field wiggle). The higher the frequency, the more energy the photon has. As the frequency of a photon goes up, the wavelength () goes down, and as the frequency goes […]

How much warning do you get for a tsunami? Experts believe that a receding ocean may give people as much as five minutes’ warning to evacuate the area. Remember that a tsunami is a series of waves and that the first wave may not be the most dangerous. The danger from a tsunami can last […]

What happens if you have familial hypercholesterolemia? People with FH have increased blood levels of low-density lipoprotein (LDL) cholesterol, sometimes called “bad cholesterol.” Having too much LDL cholesterol in your blood increases your risk for developing coronary artery disease or having a heart attack. Can you live a long life with familial hypercholesterolemia? FH has […]

What element has the second smallest atomic radius? Atomic Radius of the elements Helium 31 pm 161 pm Neon 38 pm 165 pm Fluorine 42 pm 166 pm Oxygen 48 pm 167 pm Hydrogen 53 pm 169 pm What is the atomic radius of bismuth? 230 pm What is the atomic radius of osmium? 200 pm What […]

Should I add PVA to mortar? The mortar or render is best applied when the PVA is slightly tacky. This gives it the best adhesion and because it has yet to dry and become totally waterproof, will still allow the natural porosity of the surface to assist in drying out the mix you are using. […]

Can you self refer to a psychiatrist? You can contact a mental health treatment center yourself and schedule an appointment with a psychologist there. The most complex part of the process is making sure the psychologist is in your insurance coverage network. When you make the initial phone call or fill out a contact form, […]

How long should you lie on an acupressure mat? between 20 and 40 minutes Can you use bed of nails when pregnant? We have had many pregnant women reporting back that they get a lot of relief from many of the discomfort and symptoms their pregnancy gives while using Bed of Nails, like back aches, […]

What is the best telescope for terrestrial viewing? Celstron AstroMaster 70AZ refractor telescope What is terrestrial telescope used for? Terrestrial telescopes are most commonly used for high magnification viewing over long distances in daylight. Image quality at different magnifications will depend on the optical system, the quality of glass used and the coatings applied to […]

Why do we use Laplace Transform? The Laplace transform has a number of properties that make it useful for analyzing linear dynamical systems. The transform turns integral equations and differential equations to polynomial equations, which are much easier to solve. Once solved, use of the inverse Laplace transform reverts to the original domain. What is […]

Why is potassium more reactive than sodium? As potassium is larger than sodium, potassium’s valence electron is at a greater distance from the attractive nucleus and is so removed more easily than sodium’s valence electron. As it is removed more easily, it requires less energy, and can be said to be more reactive. Is it […]