Selasa, 31 Oktober 2017

Light Poles

Light Poles

         A light pillar is an atmospheric optical phenomenon in the form of a vertical band of light which appears to extend above and/or below a light source. The effect is created by the reflection of light from numerous tiny ice crystals suspended in the atmosphere or clouds. The light can come from the Sun (usually when it is near or even below the horizon) in which case the phenomenon is called a sun pillar or solar pillar. It can also come from the Moon or from terrestrial sources such as streetlights.

    Since they are caused by the interaction of light with ice crystals, light pillars belong to the family of halos. The crystals responsible for light pillars usually consist of flat, hexagonal plates, which tend to orient themselves more or less horizontally as they fall through the air. Their collective surfaces act as a giant mirror, which reflects the light source upwards and/or downwards into a virtual image. As the crystals are disturbed by turbulence, the angle of their surfaces deviates some degrees from the horizontal orientation, causing the reflection (i.e. the light pillar) to become elongated into a column.

       The larger the crystals, the more pronounced this effect becomes. More rarely, column-shaped crystals can cause light pillars as well In very cold weather, the ice crystals can be suspended near the ground, in which case they are referred to as diamond dust

      Unlike a light beam, a light pillar is not physically located above or below the light source. Its appearance of a vertical column is an optical illusion, resulting from the collective reflection off the ice crystals, only those of which that appear to lie in a vertical line direct the light rays towards the observer (similar to the reflection of a light source in a body of water).

Source: www.

Selasa, 19 September 2017

Book Review

George’s Secret Key to the Universe
Author             Lucy Hawking, Stephen Hawking, Christophe Galfard
Country           United Kingdom
Language        English
Genre              Popular science
Published         2007 Doubleday
Pages               297
ISBN                978-1-4169-5462-0  

George’s secret key to the Universe is a science fiction novel, published in 2007.The main story tells about George, a boy with his strict parents whom forbid almost everything. He cannot eat fast food, because his parents are vegetarian. He cannot have a computer because his parents had their own generator for electricity, and it is not enough for a computer, and so on….. The only entertainment he had was just a little pig, and it disappeared in the beginning of the story.

          George then find out that his pig went to the house next door. The house next door is scary, it was abandoned, filled with tall trees, making it gloomy and dark. George then proceeds to ask to his mother about the house next door. George’s mom tells him that once there was an old man living there, and he suddenly disappeared, it was long time ago.

            George finally decide to slip to the house next door to save his pig, climbing up the fence, then swing from a tree branch. George then find his pig licking a purple liquid, turns out, it is a blueberry Juice. George then meet Anne, a little girl about his age, wearing a ballerina dress at that house. He also meet Mr.Erick , a kind man which is also Anne’s father and an astronomer. George ask a lot about science and technology to Mr. Erick, and since then they became friends.

            Before he takes his pig home, Mr. Erick shows a secret that George must keep, a supercomputer named Cosmos. When he met Cosmos, his whole life changes. Cosmos is a computer that can count really fast, teleport human and things, simply made a portal, and also make space and cosmic animation real. But Cosmos is not funny, it proud of itself too much, and sometimes think that George is silly.
            Since then, George think a lot about space and astronomy. He come frequently to Mr. Erick’s House to learn, and sometimes play with Anne, but most of the time they fight. George’s Life seems good, he learns a lot, he makes new friends when there’s an astronomers conference in that house, but not for long. He is still bullied, and also distracted from a school lesson. He draws Cosmos during the class, and his science teacher, Dr. Greeper caught him not focus during the lesson.
            Dr. Greeper interest’s towards George’s drawing Increases. He then interrogates George for more information, and give him a letter. George then report this to Mr.Erick. Mr. Erick suddenly rushed after seeing the letter, he wears his space suit and rushed towards the portal that cosmos creates.
George comes along with Mr. Erick, only to find out that the letter from Dr. Greeper are fake coordinates, filled with black hole everywhere. It was a trick after all. Mr. Erick consumed by black hole, he died in darkness, separated into atoms, but he saved George.
            It was then told, that Mr. Erick had a wife. It is also known that Dr.Greeper was Mr. Erick’s Friend, who had an evil ambitions using Cosmos, and that’s why Mr. Erick keep Cosmos out of Dr. greeper’s range.
            The story finally getting more Interesting, with the author, explains the theory he made himself in a book, to help Anne’s mom (Susan), George, and Anne to defeat Dr. Greeper and save Mr. Erick.

The plot is very interesting overall, from beginning to the end. The storyline flows dynamic, interesting, and funny. The pictures in between the story are very detailed, retro (black and white), but cute, with the help of Garry Parsons as the illustrator. There are also real pictures from satellites printed in photo papers, making this book very exclusive!! Plus, information about every planet in solar system in between the story pages, making it unique. Very recommended for all ages, but specifically target pre teenagers.
Overall, this book is worth every penny, but the paper build quality is not really good. Very educative even for adults. The plot of stranded kid with strict parents making it different from other light novels. Good for light reading, eager learners about our universe, or even illustrators, as the quality of the pictures and  are unbelievably awesome.
The Writer is Lucy Hawking, The Daughter of Stephen hawking, a Nobel prize winner in physics, astronomer and physician. Together they make this book as there is also 3 sequels from this book, making it a- 4 book series. In this book, Stephen hawking explains his new theory about black holes and hawking radiation. This book is also written with the help of Cristophe Galfard (Phd).

Thank You!!!!!

Selasa, 15 Agustus 2017

News Review

Host : Jennifer Katsner  (CBS Los Angeles)

An eclipse happens when the moon blocks the sun, briefly turning day Into Night. Host Jennifer Katsner visits the Griffith Observatory to find out more about when and where to see the great American eclipse that will occur on August 21 2017.
According to Astronomer Dr.Ed Krupp, director of Griffith Observatory,” this upcoming phenomenon is an extraordinary event, probably the most spectacular thing you’ll see in the sky.”Even Dr. Ed Krupp himself has been waiting all his life for the eclipse which is only days away. The excitement comes from its rarity, it has been 100 years since a solar eclipse occur in US from coast to coast at the average speed of 1500mph.
The path of the totality, where the moon completely blocks the sun will start from Oregon, moving diagonally down to South Carolina, covering 12 states in between .The southern Californians will only see a partial eclipse, which on the point occurs from 10:21 , when the moon covers 60% of the sun area, and finally ends in 11:44.

The Griffith observatory is going to open on the big day, selling solar eclipse sunglasses and observe the eclipse.

Selasa, 08 Agustus 2017

Curriculuum Vitae and Application Letter

Job Vacancy

Ernest Giovanni

Mobile: 08577517535       E-mail:
Personal Profile

 Name : Ernest Giovanni
 20 years old
 Born in Bandung, 11th of May 1997
 Currently stay in Singapore
Address: Jongbek street 17 
Visa status: Singapore work visa, valid until 2020


Ø  First place (gold medal) in Electrical engineering management research                                          (MIT Science event 2015)


2011-2013                                 High school                      SMAN 3 Bandung
Grade achieved:                       Undergraduate

2013-2016                      Electrical engineering            NUS
Grade achieved:                        B.Sc

Work Experience

2013-2015                   Electrical engineer                      Hewlett Packard Ltd.

Main duties performed:Control and plan manufacturing  

2015-2016                   Electric Consultant                                  Oracle Corp.

Skills and certification

Technical:  basic engineering and electrical engineering 
Interpersonal: Friendly, Wide variety of hobby knowledge , self discipline,efficient time management

Certificate: Very good (TOEFL) , Expert ( International engineer standard) , 

Hobbies and Interests

Hobbies: Golf, Badminton , cook

Interests: Public Policy and Public Interaction , Jazz Music, Sneakers(shoes), Quantum physics 

Application Letter

Austin, Texas
Ernest Giovanni
Jongbek Street 17
August,29 2017
Dear Mr. Robin
This letter is with reference to your advertisement for the electrical engineer job vacancy in your company.I am writing to you due to my interest on the post.
I have a graduate degree in Electrical mechanics from  National University of Singapore in the year 2016. Meantime, I worked in Oracle corp at Singapore as an Electric Consultant until now.I am currently doing research for Singapore Trans line electric mapping along with researchers from NUS.
I am looking for a better place to work and I find your company impressive. Your company has the reputation of one of the best employee friendly organizations. I want to be a part of this esteemed organization.I am also very Interested in microchip and eager to find out more about the making process.
I have attached my CV and my resume for more information.For further information, you can contact me on the contact number given in the resume.Please inform me if I am short listed for this post through my contact number
 I am Looking forward to hear from you,

Yours Sincerely,

Ernest Giovanni

Selasa, 10 Januari 2017


My 2016 Christmas and 2017 New Year holiday

Hi guys, and everyone who is reading at this weekly post from my blog. 2016 has come to an end (whoa) and it is a new era now, but I will not forget about what really happened last year.

My Holiday started after I got my study report. It was on 22nd of December which is actually mother’s day as well. I had no special events for 3 days after the settlement began. All I did was eventually reading comic books, playing games, and watching animes as well. Then when it came to Christmas, the fun began.

On Christmas, I celebrate lots of things with my family, we went to church at first, and then we went to a restaurant with whole of my mother’s family. It was fun, we chat all day and we play together and the most important, we gave presents to one and another. It didn’t stop there we also had this chit-chat meeting for a whole day. I mean it, a whole day, until 10 pm sharp. We actually moved to another restaurant for dinner and continue our activities there.

The Following day, at 4am, I boarded to Jogja with my family. We had a lot of fun there, enjoying the local culinary, amazingly nature structures such as ‘tebing breksi’ and famous monuments such as galleries museums and manmade temples (candi). I stayed in Jogja not for long, only until before New Year. Oh, and by the way, I visited the entire casting place in AADC movie.

On 31st December, I celebrate my grandmother’s birthday and so on, my mother’s family met up again to celebrate this moment. At the time the year changed I slept and it was noisy outside because of fireworks.

The following day , my activity much less just doing another non productive activities such as watch animes, play games, and read comic books. I did it until the last day before I went to school which is on 9th January. This time my holiday is actually not that boring though, as there are some memorable events that I hadn’t felt until this holiday.

At last, that is my experience in this holiday I hope, the next holiday I get good grades and it will be a memorable holiday like this one.

Thank you for your attention and reading, I hope you will have a nice holiday, or you already had one?

Selasa, 15 November 2016

The Marvelous Musician/The Strange Musician

The Strange Musician

Jacob and Wilhelm Grimm

Once upon a time there was a strange musician who was walking through the woods all by himself, thinking about this and that. When there was nothing left for him to think about, he said to himself, "It is boring here in the woods. I am going to get myself a good companion."
Then he took his fiddle from his back, and played a tune that sounded through the trees.
Before long a wolf came trotting through the bushes towards him.
"Ah, a wolf is coming. I have no desire for him," said the musician, but the wolf came nearer and said to him, "Ah, dear musician, you play very well. I too would like to learn to play."
"You can learn quickly," answered the musician. "You will only have to do what I tell you."
"Oh, musician," said the wolf, "I will obey you like a pupil obeys his teacher."
The musician told him to come along with him, and when they had walked some distance together, they came to an old oak tree. It was hollow inside and split up the middle.
"Look," said the musician, "if you want learn to play the fiddle, put your forepaws into this crack."
The wolf obeyed, and the musician quickly picked up a stone, and with one blow wedged his two paws so firmly that he had to stay lying there like a prisoner.

"Wait here until I return," said the musician, and went on his way.
After a while he again said to himself, "It is boring here in the woods. I will get myself another companion."
He took his fiddle and again played into the woods. Before long a fox came creeping through the trees toward him.
"Ah, a fox is coming," said the musician. "I have no desire for him."
The fox came up to him and said, "Oh, dear musician, you play very well. I too would like to learn to play."
"You can learn quickly," said the musician. "You will only have to do what I tell you."
"Oh, musician," answered the fox, "I will obey you like a pupil obeys his teacher."
"Follow me," said the musician, and when they had gone some distance together, they came to a footpath with tall saplings on both sides. There the musician stood still, and from one side he bent a young hazelnut tree down to the ground and put his foot on the end of it. Then he bent down another young tree from the other side, and said, "Now little fox, if you want to learn something, give me your left front paw."
The fox obeyed, and the musician tied his paw to the left stem. "Little fox," he said, "now give me your right paw."
He tied this one to the right stem. After making sure that the knots in the cord were tight enough, he let go. The trees sprang upright and jerked the little fox upward, leaving him hanging there struggling in the air.
"Wait here until I return," said the musician, and went on his way.
Once again he said to himself, "It is boring here in the woods. I will get myself another companion. So he took his fiddle, and music sounded through the woods. Then a little hare came jumping toward him.
"Ah, a hare is coming," said the musician. "I do not want him."
"Oh, dear musician," said the hare, "You play very well. I too would like to learn to play."
"You can learn quickly," said the musician. "You will only have to do what I tell you."
"Oh, musician," replied the little hare, "I will obey you like a pupil obeys his teacher."
When they had gone some distance together, they came to an aspen tree in a clearing in the woods. The musician tied a long string around the little hare's neck, then tied the other end of the string to the tree.
"Now quickly, little hare, run twenty times around the tree," shouted the musician, and the little hare obeyed. When he had run around twenty times, he had wound the string twenty times around the trunk of the tree, and the little hare was caught. The more the hare tugged and pulled, the more the string cut into his tender neck.
"Wait here until I return," said the musician, and went on his way.
The wolf, in the meantime, had pushed and pulled and bitten at the stone, and had worked so long that he freed his feet from the crack. Full of anger and rage he rushed after the musician, wanting to tear him to pieces.
When the fox saw him running by, he began to wail, crying out with all his might, "Brother wolf, come help me. The musician has tricked me."
The wolf pulled down the trees, bit the cord in two, and freed the fox, who went with him to take revenge on the musician. They found the tied-up hare, whom they rescued as well, then all together they set forth to find their enemy.
The musician had played his fiddle once again as he went on his way, and this time he had been more fortunate. The sound reached the ears of a poor woodcutter, who instantly, whether he wanted to or not, stopped working and, with his ax under his arm, came toward the musician to listen to the music.
"At last the right companion is coming," said the musician, "for I was seeking a human being, not wild animals." And he began to play so beautifully and delightfully that the poor man stood there enraptured, his heart filled with pleasure.
While he was thus standing there, the wolf, the fox, and the hare approached. He saw well that they had evil intentions, so he raised his shining axe and placed himself before the musician, as if to say, "Anyone who wants to harm him beware, for he will have to deal with me."
Then the beasts took fright and ran back into the woods. The musician, however, played one more tune for the man to thank him, and then went on his way.

Selasa, 01 November 2016

Praying Mantis

Mantises are an order (Mantodea) of insects that contains over 2,400 species and about 430 genera in 15 families. The largest family is the Mantidae ("mantids"). Mantises have stereo vision.They locate their prey by sight; their compound eyes contain up to 10,000 ommatidia. A small area at the front called the fovea has greater visual acuity than the rest of the eye, and can produce the high resolution necessary to examine potential prey.
The mating season in temperate climates typically takes place in autumn, while in tropical areas, mating can occur at any time of the year. To mate following courtship, the male usually leaps onto the female's back, clasping her thorax and wing bases with his forelegs. He then arches his abdomen to deposit and store sperm in a special chamber near the tip of the female's abdomen.
It's called the "Praying" Mantis because it often stands in a pose that looks like it is praying. There are different types of Praying Mantises. They are often named after different areas of the world (like the Carolina Mantis, the European Mantis, and the Chinese Mantis), but many can be found all over the world.

Praying Mantiss use camouflage to hide from predators and sneak up on prey. Different species vary in color from dark brown to green. These colors allow them to blend into their natural surroundings such as tree bark or green plant leaves. They also can hold very still to appear part of a leaf or a tree.

The Praying Mantis is a carnivorous insect. This means it lives off of other animals not plants. It mostly lives off of other insects like flies and crickets, but some larger Praying Mantids may occasionally capture and eat a small reptile or bird.

Praying Mantids will usually live from spring to fall. The longest a Mantis will live is around 1 year. One of the strangest things about this insect is that the female will often eat the male and siblings will often eat each other. Are they endangered? Most species of the Praying Mantis are not endangered and many are kept as pets. They are also good to have in your yard as they will eat other insects.

Amazing facts about praying mantis: most praying mantis live in the tropics, mantises can turn their heads full a 180 degrees, female mantis  eat male's head during their reproduction.

1.       Why Praying Mantis had such a unique name that consist “praying”word?
A.      Because They Like to Pray
B.      Because someone prayed when they saw Mantises
C.      Because Praying Mantis Poses like they are praying
D.      Because A Legend long ago
2.       How Do Praying Mantises Hide from their predators
A.      They do not hide
B.      They Camouflaged and mimic their enviroment
C.      They dig a hole and got inside
D.      They spray a distraction scent
3.       What Kinds of food does Praying mantis eat?
A.      They Are Carnivorous
B.      They Are Herbivororus
C.      They Eat Bacteria and other Microorganisms
D.      They do not eat at all
4.       How many degrees at maxed mantis can rotate their head?
A.      180 degrees
B.      270 degrees
C.      53 degrees
D.      360 degrees
5.       How do praying mantis locate their prey?
A.      They use specific hormone
B.      They use their hearings
C.      They use their sight
D.      They use electromagnetic wave
6.       In what occasion do they become cannibalistic?
A.      In a boring situation when they eat the same thing every day
B.      In winter seasons
C.      In summer seasons
D.      In mating seasons(male & female)