Category: Physics

Where is UV found? UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights. What is UV color? UV light has a shorter wavelength than visible light. […]

Why does oil make a rainbow in water? Most often seen in recently made puddles on the sides of roads, the oil refracts light much the same way a rainbow does. Simply put, the thin layer of oil floating on top of the water refracts the light which then bounces back up off the water […]

What are the different parts of the eye? What are the parts of the eye that make up vision? Cornea: This is the front layer of your eye. Pupil: The pupil is the black dot in the center of your eye that acts as a gateway for light. Iris: This part is typically referred to […]

Is Moon hotter than Sun? Temperatures on the moon are extreme, ranging from boiling hot to freezing cold depending on where the sun is shining. When sunlight hits the moon’s surface, the temperature can reach 260 degrees Fahrenheit (127 degrees Celsius). When the sun goes down, temperatures can dip to minus 280 F (minus 173 […]

Which rock is classified as an evaporite? Minerals in evaporite rocks include carbonates (especially calcite, dolomite, magnesite, and aragonite), sulfates (anhydrite and gypsum), and chlorides (particularly halite, sylvite, and carnallite), as well as various borates, silicates, nitrates, and sulfocarbonates. Which of the following igneous rocks will cool the fastest? Extrusive igneous rocks form above the […]

Is VX and VY constant? Here are some formulas that describe projectile motion: Thus the vertical velocity (Vy) is continually increasing. The horizontal velocity (Vx) remains constant and is equal to Vxo. If an object is pointed at an angle, the motion is essentially the same except that there is now an initial vertical velocity […]

What is the relation between current and resistance? The relationship between current, voltage and resistance is expressed by Ohm’s Law. This states that the current flowing in a circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit, provided the temperature remains constant. What is a specific resistance? […]

Why is shadow work dangerous? “Until you make the unconscious, conscious, it will direct your life,” he tendered, “and you will call it fate.” A shadow can lead to limiting beliefs, which may snowball into all manner of undesirable outcomes: self-sabotage, destructive behavior, ruined relationships. How do I embrace my dark side? This is the […]

What kind of image is formed with a pinhole camera? The image formed by a pin hole camera is real, inverted and the nature of the image does not depend on the shape of the pinhole. What kind of image does a pinhole camera produce? A pinhole camera is a simple camera without a lens […]

Can you open a safe with a rare earth magnet? With the help of rare earth magnets, opening a safe can take just seconds. At least that is what Terry Whin-Yates of Mr. He showed that, using a rare earth magnet, one can exploit the nickel piece in this Sentry Electronic Safe to get it […]