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 happens to the size of pupil of our eye in I Dim Light II bright light?
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 […]
What does the summer solstice mean spiritually?
What does the summer solstice mean spiritually? Here, at the Summer Solstice, the longest day of the year, we are fully awake. Our spirits are alive, refreshed, renewed, energized; all that good, juicy, rich stuff we feel in the sun. On these long days of summer our spirits yearn to be out, to feel alive, […]
Can two electrons attract each other?
Can two electrons attract each other? Show animations and explain that protons and electrons have opposite charges and attract each other. Project the animation Protons and Electrons. Explain to students that two protons repel each other and that two electrons repel each other. But a proton and an electron attract each other. What happens when […]
Can I sue my employer for not reporting my injury?
Can I sue my employer for not reporting my injury? Updated January 3, 2021 An employee injured on the job in California is generally limited to seeking recovery by filing a workers’ compensation claim. This means he or she cannot sue the employer in civil court. Can you get fired for not reporting an injury? […]
What frequency makes you smarter?
What frequency makes you smarter? The highest frequency brain waves are apparently called gamma waves. These waves can have a frequency of anywhere between 25 and 100 Hz. People whose brains produce more gamma waves are said to have greater ability to concentrate, focus and experience higher levels of cognition. Will reading increase IQ? It […]
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, […]
What are 3 physical properties of nickel?
What are 3 physical properties of nickel? Properties Of Nickel Nickel is silvery-white, hard, malleable, and ductile metal. It is a good conductor of heat and electricity. It is bivalent, that is it has a valency of two. The metal dissolves slowly in dilute acids. It’s melting point is 1453 °C and boiling point is […]