Best hourglass night light available at amazon
TENGEE Hourglass LightSleep Night Light
Do You Know--- What is an HourGlass and why is it used for?
If I ask you what time it is you will look at your watch and tell me the time, but how the time was measured before watches were invented?
In Those days the time was measured with the help of a shadow of a vertical object, this is known as a sundial, and the duration of time which in those days was often measured using an hourglass which was a device with two glasses partition placed upside down with a fine pour particle placed in between, fine sand was filled in the upper glass, and so then it would fall from the upper glass into the lower one in a fixed interval of time when the upper glass was empty the glass would be put upside down. The clocks which came much later helped to give a different measurement of time.
To do this experiment of your own, you can make your own hour Glasses and synchronize them to make a minute glass, a five-minute glass, or even an hourglass and you can simply do this by changing the quantity of sand or by changing the diameter of the tube from which the sand flows.
The Best HourGlass in today's time:
Meet One of The best products from TENGEE---- Hourglass LightSleep Night Light---- Factors affecting the time interval measured including the sand quantity, sand coarseness, bulb size, and neck width. Night light Hourglasses may be reused by simply inverting the bulbs upside down. Once the upper bulb is empty, turn the glass and you can see the same flow, the Depictions of night light hourglasses is an art that survives in large numbers from antiquity to the present day, used as a symbol for the passage of time. I must say this is the most beautiful night light. As shown in the image, when the sand falls, the light on the base of the lamp will be slowly covered by the sand, after 15 minutes as soon as the light gets darker and darker, your kids will fall asleep.