Aug 18

On this day, 

1️⃣ Helium Discovery Day: Thanks to the efforts of two scientists who found Helium on Aug 18, 1868. It’s colorless, odorless, tasteless and lightest gas what causes balloons and airships to float.


History:

In the mid-19th century, scientists wanted to check the chemical composition of the sun, and thought that a solar eclipse was important to do as such. In 1868, French astronomer Pierre Jules César Janssen went to Guntoor, India, to watch an eclipse in order to study the sun's composition. On August 18, using a prism, he saw a yellow light that showed up as sodium, yet discovered that it didn't have a similar frequency as that component. It seems like what he had found was helium!


5 interesting facts:

  1. It is non-poisonous, so it is used in deep scuba diving

  2. It exists only as a gas because of its properties i.e. It has the lowest melting point and boiling point

  3. It belongs to the family of noble gases and is the lightest of all the noble gases

  4. Helium-neon gas lasers are used to scan barcodes in supermarket checkouts

  5. It is also used to detect leakages in car air-conditioning systems etc.

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2️⃣ Mail Order Catalog Day: To celebrate the old-fashioned way of shopping by picking up things from a printed paper or list, and order and paying through the post/ mail or over the phone.


History:

Shopping through mail request has a rich history. Experts accepts that the first shopping catalogs was created in the late 15th century. By the 20th century, mail order catalogs offer anything from groceries to full-fledged homes became a big part of daily mail received by people. Today, with the advances in technology innovation, printed mail order catalogs are being replaced by web based shopping.


5 ways to celebrate:

  1. Order something from a mail order catalog

  2. Take a print order catalog and grab the offer

  3. Post a pic of a mail catalog you got in your mailbox

  4. It’s excellent day to support local retailers

  5. When you visit any store today, do fill up feedback form

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