When we starve ourselves for a long time or skip a meal our blood sugar level drops and the brain doesn’t get the adequate amount of glucose for its functions. As a result, our bodies release stress hormones and our facial muscles get contracted which is why we get headaches.
Do you know why you get a headache when you starve yourself for a long time or skip a meal?
Do you know that the four sharp front teeth of rats continuously grow throughout their lives? Rats chew on hard objects to wear down their teeth so they do not overgrow.
If you have ever tried placing an aluminum foil under the ironing board cover while ironing clothes you must have experienced that your ironing time can be lessened to half the time that you usually spend for that. The foil will reflect the heat produced by the iron, towards the cloth, so it’s like ironing your cloth from both sides at once.
Do you know how snakes hear the whistling sound of the snake charmers’ flute? Though they don’t have eardrums, their skin and muscles carry the sound waves to the jaw bone which is connected to their inner ears. When the jaw bone vibrates their brains receive the signal of the sound and they respond.
This occurs due to the interference of electromagnetic waves produced by the cell phone .The phone is basically a radio transmitter .It transmits signals to nearby signal transmitting stations .When the phone rings, a number of electromagnetic waves gather near it and these waves are picked up by the speaker .The speaker acts like an antenna ,amplifying the signals and converting them to sound waves .So you hear a high pitched sound from the speaker.
Do you know why a speaker makes a weird noise when a cell phone, that is kept near it receives a call or a message?
Have you noticed a halo (ring) around the moon mostly on poya days? This is made by the light that passes through six-sided ice crystals that are present high in the sky. These ice crystals bend the light rays reflected by the moon in different directions and finally create a halo.
Do you know how some penguins swim so fast? They have a special “bubble boost.” When penguins fluff their feathers, they release bubbles that reduce the density of the water around them .It will help them to reduce the objection create by water and make easy to swim.
Have you ever seen people hanging water filled bags in places which are polluted by flies? This method is used to get rid of flies by repelling them. Light rays refract from the water surface and create a number of optical illusions. Insects, especially flies get confused when they see these illusions so they fly away.
Minerals which are dissolved in underground water passes up through small capillaries in the walls of ground floor to the places that are damp. After water gets evaporated, the minerals remain on the wall and produce white patches. These minerals absorb water vapour from the atmosphere. Ultimately these surfaces can be affected with the growth of fungus.
Have you noticed that there are white patches on damped walls of some old buildings? Do you know what those white patches are and how they occur ?
Do you know why sometimes your eyes become watery when you yawn? Some of your facial muscles get flexed,when you yawn , placing a pressure on your tear glands and causing tears to come out. The tiny black dot on your lower eyelid is where the tears normally drain away. While you are yawning ,this duct is closed for a while , so the tears that are produced ,stream out of your eyes.
Can you remember an instance when a glass jar unfortunately shattered while you were pouring hot water into it? The reason is that,as the inner surface of the glass heats, it expands while the outer surface remains cool.Since the glass does not expand as a whole,it shatters due to the great pressure applied on it by the inner surface.
Do you remember a time when you accidently swallowed papaya seeds while you were eating papaya? The enzyme papain, contained in papaya seeds helps your body to get rid of parasites inside your gut.
Rancidity is the process which makes butter smell bad. In this process, fatty materials which make up butter, break into small substances that are unpleasant in taste and odor.