Sunday, 17 July 2016
Wednesday, 20 April 2016
Why we should not pluck leaves at night?
You might have heard even once in you life that - "Do
not pluck leaves at night"
And we often ignore this instruction.
But one thing which we all are curious to know about is that
why we should not do so ?
Following set of sentences might stimulate your soul to NOT
TO HARM MOTHER NATURE AGAIN !
This can be the reason for this 'ancient caution' -
Plants exhale oxygen and inhale carbon dioxide during the
process of photosynthesis. But during respiration, they just do the opposite
- they inhale oxygen and exhale carbon dioxide.
Plants respire all the time because their cells need energy
to stay alive, but plants can only photosynthesise when they are in the
sunlight. And in lack of sunlight, they only perform respiration !
So in order to NOT to disturb the plant life, (as we all
know how plants are crucial for our existence ) we are often restricted to
pluck leaves at night.
Please share this with you friends & family.
#Respect Nature #Save Trees
Science of Skin: Why do we appears the way we are?
Have you ever wonder why we all have this 'Brownish' skin?
And why do we humans have so much different skin colours?
Well, if you ever thought of the questions above, all your
queries are going to end today !
This article is just for you.
Actually our skin colour is affected by so many substances,
but it is mainly influenced by a pigment called 'Melanin'.
Melanin is a complex polymer derived from the amino acid
-Tyrosine. It is primarily responsible for determining skin and hair colour of
an individual.
Melanin-producing cells are called Melanocytes which are
located in the bottom layer of the skin's epidermis, the middle layer of the
eye, heart, etc.
A mere explore to sun leads to the production of melanin by
our skin cells. Melanin production is increased along with you are more exposed
to the sunlight.
Melanin are of 3 types -
1. Eumelanin; responsible for the brown colour of our skin
and dark colour to hairs.
There are two types of Eumelanin -
(1.) Brown
eumelanin.
(2.) Black
eumelanin.
2. Pheomelanin; responsible for giving skin and hairs a
reddish shade.
3. Neuromelanin; is a dark pigment found in the brain and
loss of this melanin may cause several neurological disorders.
Time Travel ; Can we see the glimpses of past ?
And just for now, we really don’t have that technology which
can take our physical body on a trip to past.
But CAN WE SEE PAST ?
Well, If you ask me
to just ‘see’ past ?
Then YES, I have a way.
I’m not sure it works or not, but let’s make a try.
PLEASE CORRECT ME IF YOU FIND IT WRONG !
First of all let me clear that we don’t need a huge
machinery to just peek into the past.
So what we need ?
Don’t worry, We just need a huge a very huge Mirror !
Yes, you’ve heard right - Mirror.
And What else we need ?
A light source, we have Sun for this job. Cause we can see
things because of reflection of light back into our eyes.
And finally and most important – Distance.
Distance between the mirror and the observer is proportional
to the time difference between the event and its observation.
In simple words, more is the distance, more you can see the
past !
Now all set, let’s start our experiment...
Here is an Event happening on Earth, and we have set a HUGE
mirror on Moon.
As we know, distance between Earth and Moon ‘d’ = 384,400 km = 384400000 m/s , and speed
of light ; c = 299792458 m/s ~3 x 10^8
m/s .
As, Time = Distance/Speed ;
and Speed of Light ‘c’ is constant, then -
- For the Event happening on Earth, then light rays
associated with that event reach the mirror in time ‘T1’. Let them call
incident rays ‘i’.
- Reflected rays ‘r’ returning back from the mirror take
time ‘T2’ to reach to the observer’s eyes.
- As because speed of light ‘c’ is constant and distance
between Earth and Moon ‘d’ is the same.
Thus, T1 = T2 .
- So total time difference between the Event and the
Observation ‘T’ = T1 + T2 .
So from the calculations, we have T1=T2= 1.28 sec.
And T = 2.56 sec.
CONGRATUALTIONS ! You’ve just seen which had happen 2.56
seconds before. i.e, More the distance, more the time delayed, more you can see
the past !
There's nothing in the sky, fault is in your eyes. 😎
And if you say – Yes 😨 but you really don't know what exactly it is, then this article belongs to you. 😄
Actually what you have experienced is called 'floaters'. More scientifically this phenomenon is know as 'muscae volitantes' ; Latin name for 'flying flies'. 😇
The reason behind this phenomenon is quite interesting and correlate with the title of this article.
Floaters are tinny 'objects' inside your eye ball (in vitreous humor), which casts shadow on you retina.
These 'objects' might be suspended particles of erythrocytes
(RBC), tinny tissues or clumps of protein.
Visibility of 'floaters' is proportional to their distance
form the retina. Closer to the retina, more will be its visibility !
Floaters are often visible when you are looking at a uniform
bright surface, like - A clear-shiny sky or an uniformly bright computer
screen. But they often remains unnoticed 'cause our brain has the power to
usually ignore these 'obstacles' in our clear vision. 😋
This is the common cause for this phenomenon, moreover there
are various causes for the appearance of floaters.
KNOW MORE : https://en.wikipedia.org/wiki/Floater
Can we Grow Life outside our planet ?
Well, there could be many possible reasons or might be life
is a resultant condition. But the most accepted is ‘Theory of Chemical Evolution’
which accounts the origin of life on this planet in terms of spontaneous
chemical reactions and evolution of organic chemicals.
In addition to the origin, Species differentiation and
presence of a wide range of organisms on this planet is itself a big mystery. Concept
of ‘Evolution’ was coined to approach the probable cause of this wide
biodiversity, but there are some questions which are still unexplained by this
theory. Even chemical evolution is unable to present any practical
demonstration by artificial formation of a single living cell.
Theories of evolution are much supported by the factors like
adaptations, variations due to sexual reproduction, genetic drift etc. And the
notion of Mutation, gives it a huge motion ! 🐾
But today when I was reading a news report about Mars
Orbital Mission, I just lost in deep thoughts of 👽
aliens and ET's. Then suddenly a thought coined into my mind. So I decided to write
about it and share with all of you. ✒
💭
I suggest that we have to use our knowledge of biotechnology and DNA recombination
techniques to develop some ‘species samples’ 🌱
with artificial changes in their DNA. Then to grow these newly formed species under
artificial laboratory conditions similar to some other planets of our Universe
where life supporting conditions could be present. And to send these ‘species
samples’ on desired planets. If these samples grow, reproduce and adapt
conditions of those planets, then it would be so easy for us to understand the
mechanism of life and to better understand our own origin. 🌏
Tuesday, 19 April 2016
Mars with a ring, in next ~40 Million years.
Phobos ( largest moon of Mars) is slowly falling towards the
planet and is likely to be shredded into pieces, that will be strewn about the
red planet in a ring.
The demise of Phobos will probably happen in 20 to 40
million years, leaving a ring that will persist for anywhere from one million
to 100 million years.
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