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13 Dec 2022 02:23

What australian lake glows in the dark ?

Australia's Gippsland Lakes Glows in Dark, Swimmers Turn Blue.

The micro-organism Noctiluca Scintillan on full display.

It's called bioluminescence, a phenomenon found in nature where micro-organisms will start to glow after a disturbance in the water.

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11 Dec 2022 12:22

New Words Daily with its Meaning.

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09 Dec 2022 04:19

When was the first vaccine developed?

First vaccines. Edward Jenner invented a method to protect against smallpox in 1796.

The method involved taking material from a blister of someone infected with cowpox and inoculating it into another person's skin; this was called arm-to-arm inoculation.

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08 Dec 2022 04:57

What part of the body does not have a blood supply?

The only living cells in the body that aren't directly served by blood vessels are those of the cornea in the eye.

Oxygen and nutrients instead diffuse directly from the tear fluid on the outside and the aqueous humour (the thick watery substance between the lens and the cornea) on the inside, as well as along the nerve fibres that are connected to the cornea.

One of the problems with contact lenses is that they reduce the oxygen supply from the outside. Even with gas-permeable lenses, this can cause corneal neovascularisation, where blood vessels grow into the cornea. This problem is reduced or eliminated by the newest silicone hydrogel lenses.

As well as the cornea, other areas of the body that don't have blood vessels include hair, nails, tooth enamel and the outer skin layers.

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06 Dec 2022 03:46

Why do ceiling fans get dusty?

The latter is the case for ceiling fans.

As the blades rotate, they experience frictional forces as they `rub' against the air; this knocks electrons around, causing the blades to build up a net charge.

The charged dust particles then stick to the charged areas of the blades.

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05 Dec 2022 15:16

How does a helicopter work?

In order to fly, an object must have "lift," a force moving it upward. 

A helicopter's rotor blades are wings and create lift. An airplane must fly fast to move enough air over its wings to provide lift.

A helicopter moves air over its rotor by spinning its blades.

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04 Dec 2022 08:07

What is ABC warfare?

In military context ABC warfare means atomic, biological and chemical warfare.

Nuclear, biological, chemical warfare are referred to as NBC, and chemical, biological, radiation and nuclear warfare known as CBRN.

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02 Dec 2022 00:25

Does Worker Ants have two stomach ?

Worker ants, responsible for the feeding of the colony, have two stomachs.

The first is for its own food, and the other is where it stores food that it will regurgitate to feed its fellow ants.

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01 Dec 2022 05:54

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29 Nov 2022 02:35

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28 Nov 2022 04:32

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28 Nov 2022 04:30

Who was the first to land on Australian shores?

Not counting that the indigenous people have inhabited Australia for over 40,000 years, the first to land on Australian shores was not James Cook as most would believe.

In fact, the first European to land was a Dutch explorer by the name of Willem Janszoon.

He is the first recorded person to reach Aussie shores on the western side of the Cape York Peninsula, and he charted around 300km of the coastline in 1606.

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27 Nov 2022 07:36

What is Schengen area?

The Schengen Area is an area comprising 26 European countries that have officially abolished passport and all other types of border control at their mutual borders.

Under the Schengen agreement, transiting from one country to another within the Schengen area is done without border controls.

In fact, the Schengen visa makes it possible to visit all the countries in the Schengen area and to cross internal borders without further formalities.

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26 Nov 2022 02:58

Are Footballs Really Made Of Pigskin?

The first balls were made of natural materials, such as an inflated pig bladder in 1540s, later put inside a leather cover, which has given rise to the American slang-term "pigskin".

Modern balls are designed by teams of engineers to exacting specifications, with rubber or plastic bladders, and often with plastic covers. 

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24 Nov 2022 05:09

Which is the world's first online shopping site ?

The first secure retail transaction over the Web was either by NetMarket or Internet Shopping Network in 1994.

Immediately after, Amazon.com launched its online shopping site in 1995 and eBay was also introduced in 1995.

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13 Dec 2022 02:22

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11 Dec 2022 12:16

What is the white, powdery substance that forms on battery ?

The white powdery substance is sulfuric acid and hydrogen crystals from the escaping hydrogen battery gases and liquid (the batteries have vents that allow the gases to escape.)

This acid causes corosion of the copper wires and steel bolts attached to the battery and to some degree the battery posts and post connectors which are made of lead.

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08 Dec 2022 04:58

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06 Dec 2022 03:47

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05 Dec 2022 15:17

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04 Dec 2022 08:08

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02 Dec 2022 00:25

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01 Dec 2022 15:31

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01 Dec 2022 05:53

How did Google get its name?

After almost calling google ‘backrub’, Larry Page's (co-founder of google) friend, Sean, suggested googolplex, the number googol to the power of ten (one with 100 zeros).

How ever Larry settled with the shorter term, googol. Sean, not realising googol was spelt with an ‘ol’ and not ‘le’ searched to see if the domain “google.com” was available.

Larry liked the name google and stuck with the new made up word which we all know of today.

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29 Nov 2022 02:34

Where on Earth are the most of telescopes mounted?

It is on the Kitt Peak, a 2096 meter high mountain in Arizona, USA.

Due to excellent watching conditions and atmospheric clarity here, at the Kitt Peak National Observatory, 23 major telescopes are there on its summit, since 1958!

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28 Nov 2022 04:31

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27 Nov 2022 07:37

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26 Nov 2022 03:00

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24 Nov 2022 05:10

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22 Nov 2022 03:53

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