Why do chillies burn even though they are cold?
Chillies contain capsaicin, which makes the receptors in our mouth feel that there is something really hot. Capsaicin affects receptors everywhere, so we normally feel the heat again throughout. The degree of heat found within a food is often measured on the Scoville scale.
Why Is the Sunset Red or Orange?
The sunset appears reddish because while the sun is setting, the light that reaches us goes through different atmospheric layers when the sun is overhead. Hence, the only coloured light that is not scattered away is reddish which is a long wavelength light.
Why Does the Moon Appear in the Daytime?
The moon does not produce its own light. We see the moonlight when the sun’s light is reflected off its surface. The visibility of the moon’s light also depends on its angle and its distance from Earth. When the moon and sun are on the same side of the Earth, it makes the moon 1,00,000 times brighter than the brightest star in the sky, thus making it visible during the day.
Why is a rainbow curved?
A rainbow is curved because it reflects the round shape of the sun. On Earth, part of the sun is blocked. This makes rainbows appear as a half or a quarter circle. But when we are in an airplane, we often see the rainbow below and it might appear as a full circle.
Why is the Sun the only star that can be seen during the day?
Stars often glow during the day. But because of their brightness and closeness of the sun, they are impossible to see. Also, the light coming from the sun is scattered into the bright blue colour of the sky. This bluish atmosphere blocks out the stars which shine very faintly. On the other hand, if we see the Earth’s atmosphere from above the moon, we could see the stars appear both during the day and night.
–Team ScienceNow Digital
