Why does rain make me feel safe? Studies have found that when rain sounds enters people’s brain, brain unconsciously relaxes and produces alpha waves, which are very close to the state of brain when human sleeps. Rain sound is generally between 0 and 20 kHz. It is not upsetting. On the contrary, this sound makes […]
Does helium go bad?
Does helium go bad? No, helium does not expire. You must close the valve tightly or helium will leak over time. Are Balloon Time tanks recyclable? What weight can helium lift? Helium atoms weigh less than the oxygen and nitrogen atoms in the air. Helium has a lifting force of about one gram per litre. […]
What is the CMS system?
What is the CMS system? A Content Management System, or CMS, is a piece of software designed to help users create and edit a website. They have evolved to help design the look of websites, track user sessions, handle searches, collect visitor comments, host forums and much much more. What is CMS LHC? The Compact […]
Does drag force increase as velocity increases?
Does drag force increase as velocity increases? The downward force of gravity remains constant regardless of the velocity at which the person is moving. However, as the person’s velocity increases, the magnitude of the drag force increases until the magnitude of the drag force is equal to the gravitational force, thus producing a net force […]
Can light be a reference frame?
Can light be a reference frame? In all reference frames that actually exist, light travels through space and time in a normal way just like any other object. According to Special Relativity, as a frame goes faster, it shortens more in the direction of motion, relative to the stationary observer. How did Einstein know that […]
Can you feel when your brain is touched?
Can you feel when your brain is touched? How much you empathize with other people seems to reflect how strongly your brain—your primary somatosensory cortex—“feels with” them when you see them being touched. Of course, all these claims require further investigation. And, of course, empathy is a complex phenomenon. Does the brain touch the skull? […]
What is the change in momentum of a 3 kg object accelerating from rest to 12 m s?
What is the purpose of a spectrograph?
What is the purpose of a spectrograph? A spectrograph is an instrument that separates incoming light by its wavelength or frequency and records the resulting spectrum in some kind of multichannel detector, like a photographic plate. Many astronomical observations use telescopes as, essentially, spectrographs. What are spectral features of an image? Spectral features of images, […]
How does gradient change discharge?
How does gradient change discharge? While gradient decreases between a stream’s headwaters and mouth, discharge increases. Gradient and discharge determine the velocity of a stream. What is a stream profile? A stream profile is a cross-section view of a stream from its headwaters to its mouth. What is the relationship between urbanization and water supply? […]
Why did the ball roll when laid on the floor?
Why did the ball roll when laid on the floor? because the friction present between the surface pushes the atoms/particles in contact with surface or ground backwards, hence with centre of mass moving in a direction, the ball’s bottom surface(ie. The surface in contact) moves in opposite direction or backwards, causing the ball to roll. […]