Category: Physics

IS elements and compounds can be broken down into simpler substances? Elements cannot be broken down into a simpler substance. Likewise, one element cannot be chemically converted into a different element. Chemical elements are the simplest of substances. Is vinegar better than bleach for cleaning? Cleaning vinegar or white vinegar – not apple cider vinegar […]

What makes city lights twinkle? The exact same reason why stars appear to twinkle: atmospheric turbulence. The photons (light) from distant, pointlike sources travel through Earth’s atmosphere to reach your eye. The time-varying nature of the air in our atmosphere produces time-varying scatter, corresponding to time-varying brightness. Why do street lights blink at night? The […]

What are the similarities and differences between digital and analog data? Digital data is stored in form of bits. Analog data is stored in form of waveform signals. Digital system needs low power as compare to its analog counterpart. Analog systems consume more power than digital systems. Is digital signal immune to noise? As a […]

What color will brighten up a dark room? Go for pale shades of grey and blue for maximum lightening effect. If it’s warmth you’re after, don’t be afraid to use light terracotta or yellow paint colours – a sunny hue can brighten and warm a dark, dingy space. Just be careful not to clutter the […]

What can you see with a compound light microscope? Compound microscopes are used to view small samples that can not be identified with the naked eye. These samples are typically placed on a slide under the microscope. When using a stereo microscope, there is more room under the microscope for larger samples such as rocks […]

What are the 5 types of stress? Stress factors broadly fall into four types or categories: physical stress, psychological stress, psychosocial stress, and psychospiritual stress. What are the two types of stress? There are two main types of stress; acute stress and chronic stress. These describe the difference between the little stresses that we experience […]

Is woven bone immature? The first type of bone formed developmentally is primary or woven bone (immature). This immature bone is later replaced by secondary or lamellar bone (mature). What is a woven bone called? Woven bone (also known as fibrous bone), which is characterized by a haphazard organization of collagen fibers and is mechanically […]

Which key is used to move the insertion point to a new line? Arrow keys: You can also use the arrow keys on your keyboard to move the insertion point. The left and right arrow keys will move between adjacent characters on the same line, while the up and down arrows will move between paragraph […]

What does double dummy mean? : bridge or whist played by two players, each having a dummy and knowing the exact location of every card from observation of his or her own hand and the two exposed hands. What is the difference between a blind and a double blind study? In a single blind study, […]

Are phone lux meters accurate? ➢ Based on our findings, Android Lux meter applications provided much better measurements than IOS applications. ➢ However, these results confirm that accurate illuminance measurements should always be conducted through professional lux meter devices . What is the best lux meter app? Best Light Meter Apps for Your Smartphone in […]