Knowledge Pays Off

What is the difference between sports and games ?

A sport is a physical activity carried out under an agreed
set of rules,  with a recreational purpose for competition
or self -enjoyment or a combination of these. A game is a
recreation activity involving one or more players, defined
by a goal that the players try to reach, and some set of
rules to play it. Games are played primarily for
entertainment or enjoyment. The difference of purpose
differentiates sport from game, combined with the notion
of individual (or team)   skill or prowess.

What is the difference between electrical and electronic
devices ?

Since the advent of power electronics, it has become difficult to
draw a boundary between electrical and electronic devices. An
approximate boundary can be drawn on the basis of the power
level –– 20 watts can be set for this purpose. Those devices
operating at less than 20 watts can be said to be electronic and
devices above 20 watts are electrical devices. A further
classification of such devices is on the basis of operating voltage
are electronic and those with high operating voltages are
electrical.

What is the difference between sauce and ketchup ?

Traditionally, in the US, tomato ketchup was prepared with
tomatoes, sugar, vinegar/ acetic acid and spices. It is used as a
dressing or table condiment to be consumed with chips,
Buerger's, etc. Ketchup is cold and is never heated as a rule.
Tomato sauce, on the other hand, is made of vegetable stock and
spices. Vinegar is not usually used.  Sauces are generally served
hot. Most manufactures insist that ketchup is made with spices
onions and garlic while sauce is generally made with out spices.

How is the inflation rate calculated ?

The inflation rate is worked out form Consumer Price Index
values (CPI), The CPI is calculated from the weighted prices of
several groups of articles of consumption like food items,
machinery, chemicals, metals, building construction material,
etc. The inflation rate is the percentage  increase or decrease in
the values of CPI at a specified time interval.

Why does one never hear of heart cancer ?

Skin, intestine, bone marrow and other tissues are more prone to
cancer because of a large presence of dividing cells. On the other
hand, heart is less prone to tumors because its muscle tissues are
essentially non-dividing. Therefore, we usually do not hear about
heart cancer. Tumours of the heart muscle are rare but they do
sometimes develope. These are called cardiac sachems, the most
common tumour of the heart, and 30% of these are
abgiosarcomas. The heart could also be a target organ for
metastatic (spreading) cancer from other organs, like cancer of
the breast, the langurs, and also melanoma (skin cancer)

Why doesn’t  AIDS spread through mosquito bites ?

Strictly speaking, it is not AIDS but HIV that spreads through
blood, semen and from a mother to child. Mosquitoes cannot
transmit HIV for two reasons. Firstly, when the mosquito bites
with its proboscis, it draws blood and injects saliva, which
contains antiviral factors and immuoglobulines and hence cannot
transmit HIV. The blood from  one person is not injected into the
mosquito’s next victim. Secondly, HIV dies in the mosquito’s
body because the mosquitos after sucking the blood digests the
blood and doesn’t immediately need to feed on another.
Therefore, it takes a while to digest this blood and by then, it
also digests all the virus containing cells.

What is the difference between rock and pop music?

Rock is a form of popular music, usually featuring  vocals (often
with vocal harmony), electric guitars and a strong back beat ;
other instruments, such as the saxophone, are common in some
styles. The genre of rock is broad, and its boundaries loosely
-defined, with distantly related genres sometimes included. Pop
music, in popular and contemporary parlance, is a sub-genre of
popular music. Since the term spans  many acts  (rock, hip-hop,
rhythm and blues (R & B), country, dance and operatic pop), it is
reasonable to say that ‘pop music’ is a loosely defined category.
The term is also used in a derogatory manner by those who feel
that pop lacks any musically artistic meaning, or for
lack of better terminology, represents a ‘betrayal’ from the
traditional sound of either the acts itself or the specific genre to
which the act belongs.