Showing posts with label Great. Show all posts
Showing posts with label Great. Show all posts

Saturday, January 17, 2026

What are some great optical illusions?

 1. . Try to focus on one of the two “faces”. Your brain doesn’t know which “face” is real :-

2. Find the map of India :-

3. Flip your phone towards 90° left :-

4. Look closely :-

5. Mexican studio Golpeavisa made a portrait of RenĂ© Redzepi (the world’s best chef) out of food :-

6. Body painting art by Craig Tracy :-

7. A work by Japanese artist Makoto Aida titled AZEMICHI (a path between rice fields) :-

8. Perfectly timed photo of the full moon rising through the Olympic Rings hanging beneath Tower Bridge during the London 2012 Olympic Games :-

9. Find out who is who :-

10. Illusive floor to walk :-

11. Animal Head :-

This is an optical illusion which is being made by a very famous artist to create a very scary effect by combining different animal images and placing them to form a human face.

12. Hawk :-

Don't think so much. It's a Palm art.

One more

13. Snake or Crocodile :-

14. Look at the man on the horse and find out how artist portray that :-

15. Absent of a Mermaid :-

16. How many faces can you see on this picture?

There should be 11 faces on this picture. Average people see 4-6, sensible 8-10. The best see all 11, schizophrenics and paranoids 12 and more. And you?

17. Fraser Spiral :-

First described by British psychologist James Fraser in 1908, this illusion is also known as the “false spiral”. While it appears that the overlapping arcs are spiraling into infinity they are in fact only a series of concentric circles.

18. Endless Staircase :-

This is a variation of the endless staircase optical illusion constructed out of legos. Like the the blivet, this is also an impossible object and is sometimes called the “Penrose triangle”.

19. Power of an art :-

20. DALI ILLUSION :-

Profile of Salvador Dali and a strange woman. Head of the female figure is also eye on the big face.

21. DON QUIJOTE :-

How many faces can you count on this Don Quijote painting by Octavio Ocampo?

22. 7 FACES :-

23. Magic of Barack Obama :-

24. This painting is called "Optical Illusion" - literally - you can see those 2 words there (by John Langdon) :-

Wednesday, January 14, 2026

Why is Rajendra Chola I considered "The Great"?

 Rajendra Chola 1, the son of Raja Raja Chola 1, is considered to be one of the greatest emperors ever of the Chola dynasty. Under his reign, the Chola Empire extended all the way up to Ganga in the North, and became a true naval superpower going all the way up to South East Asia.

He ascended the throne in 1014 AD, during the final years of his father’s reign.

As a co-regent along with his father in 1012, he led a campaign to Iditurai-Nadu, basically the Krishna and Tungabhadra doab, conquering it, giving them fertile agricultural land and also as a buffer against the Western Chalukyas. He also conquered the city of Banavasi, pressing the Cholas into the Western Deccan competing with the Hoysalas.

In 1013 he captured Kolipakai now in Telangana, known for it’s Jain temples and a stronghold of the Western Chalukyas, as the Cholas consolidated their hold in the Deccan. He invaded and conquered the Pandya, Chera Perumal kingdoms

The campaigns in Northern Karnataka, Southern Maharashtra saw Rajendra Chola, come into his own, breaking away from the shadow of his father, as he struck deep into Western Chalukyan territory, sacking and destroying Manyakheda, their capital, dealing a huge blow to their long time rivals.

When his father passed away in 1014, Rajendra now had the responsibility of expanding the kingdom further. He first sent a Naval expedition to Sri Lanka in 1016 against the Ruhuna kingdom, defeating them, and bringing the island under his control.

In 1017, the Chola forces pushed into Kerala capturing Kudamalai Nadu, gaining control over the lucrative spice trade, as well as access to ports and trade routes along the Malabar coast. The very next year he launched an expedition into the Indian Ocean, capturing the islands of Maldives, Lakshadweep, which were strategic for trade with Arabia. The Cholas by now had complete control over the sea routes in the Indian Ocean and Arabian Sea.

Rajendra again launched another strike against the Western Chalukyas in 1019, who had regrouped after the loss of Manyakheta, and had a new capital at Kalyan( Maharashtra). While the Cholas did lose Kalyan, they again recaptured it after the Battle of Maski. Inspite of the rather intense rivalry with the Western Chalukyas, that kept going back and forth, Rajendra Chola already had control over Sri Lanka, Kerala, the Maldives, and Lakshadweep.

And it was then he began to prepare for his most ambitious military campaign ever, into North and Western India, as he transitioned from being just a regional overlord to an emperor of the sub continent itself.

And this marked the start of the legendary Gangaikonda Chola campaign, that would define his legacy for centuries to come.

It began with the capture of Sakkarakkoattam( Southern Chattisgarh), which he used as his base to advance into Central India, and also split his campaign into two wings, one marching towards the Gangetic belt, another towards Western India that was controlled by the Parmaras and Kalachuris. At the same time he stationed himself at Sakkarakkoattam, coordinating both the campaigns.

Odisha fell as the regions of Odda Vishayam and Thandabuththi , were captured, which would soon become the Empire’s eastern frontier, securing access to the Eastern coast. With the capture of Kosala Nadu( Western Odisha, North Chattisgarh), Rajendra consolidated his hold over Central India.

Thakkana Laadam and Uttara Laadam in Jharkhand were subdued, gaining access to the mineral rich regions in the East. As the army pressed eastwards into Bengal, the Pala ruler was defeated, as the Chola army reached the Ganga. It’s believed he bought back pots of water from Ganga to consecrate his new capital Gangaikonda Cholapuram.

And in 1022 CE, his forces returne back after their triumph in the North, the details of which have been recorded in the Meikeerthi inscriptions of 1023 CE. The Gangaikonda Cholaeswarer temple was built in commemoration of the victory, consecrated by the Rajaguru, Isaana Pandithar. Rajendra in turn claimed the honorific Gangaikondaan, while his younger brother Araiyan Rajarajan, who led the Gangetic expedition, was given the title Gangaikonda Cholan.

Rajendra commenced construction of Gangaikonda Cholapuram, envisioned as a rival to his father’s capital at Thanjavur, that had the massive temple, as well as the Chola Gangam Tank,a massive water reservoir, where the holy water from Ganga was ritually mixed. As per the Essalam Copper Plates, -the construction of the city, temple, and tank was somewhere in the Udaiyar Palaiyam region of Ariyalur district.

The Gangaikonda Cholaeswarer temple houses a form of Shiva known as Peruvudaiyar, with a huge lingam of 13 feet, and circumference of 20 feet.

He then began his overseas expedition between 1023–24 CE, as the Srivijaya Empire controlling the maritime trade over Straits of Malacca was attacked. The Chola fleet first attacked the Sri Vijaya capital at Palembang, the very heart of their maritime trade. And soon they seized Malaiyur consolidating their hold over southern Sumatra. Soon Mevilbangham on Bangha island fell as the Cholas took over the entire archipelago.

Vallaipandur (Northeast Malaysia) and Kadarem (Northwest Malaysia, modern Kedah) were taken, as the Malayan Peninsula too came under Chola control. The fleet pressed further capturing Ilankasokam ( SE Thailand), Mathamalingam( Eastern Thailand) and Thalaitakkolam( Western Thailand) as the Cholas by now lorded over most of mainland South East Asia.

On the way back, the Chola fleet captured Manakkavaarem (Andaman & Nicobar Islands) and Magpapaalam ( Southern Myanmar), returning triumphantly to their homeland.

The massive Vijayamkonda Cholaeswarem Siva temple was built at Erumbur( Cuddalore dt) to commemorate this victory, now this temple is called the Kadambavanesvara temple. Rajendra assumed the title of Kadaremkondaan to signify his conquest of Kadaram( modern day Kedah, Malaysia) and one of his grandsons who led this expedition was given the title Kadremkonda Cholan.

The magnificient temples at Gangaikondacholapuram, to commemorate his victory over the Pala are a standing reminder of his legacy. He also developed the Koneswaram Temple in Trincomalee, as well as the Pathirakali Amman Temple. He developed an efficient water management system that helped in irrigation and water supply.

Tuesday, January 13, 2026

What are some great optical illusions?

 Illusions challange us to great critical thinking.

They are designed to play with our minds and nerves.

Here are some cool optical illusions:

  1. Ebbinghaus Illusion

Tell me what orange circle looks bigger?

Right one?

What if I told you, they are the same size!

This illusion takes advantage of our perception of relative size. The circle above is surrounded by larger circles, making it seem like it’s smaller than a same sized circle with smaller circles around it.

2. Spiral Illusion

Are the circles touching? Are they Spirals?

It looks like they are crossing over one another. But they are not !

Peripheral vision does not accurately keep track of all the visual details, and so in some situations like in this illusion, the visual system makes errors. Amusing. Isn't it.

3. "3D" Kitchen

At first glance, this looks like a normal newspaper, right?

Creative director Felipe Salazar and graphic designer Karen Castaneda recently turned a newspaper into an ad for supermarket.

In reality paper is completely flat.

4. Check out this park inside Paris, it looks like a 3D globe

This is a 3D illusion that uses perspective and carefully planned out design to create the illusion.

Take a view from another angle.

Mind behind: Francois Abelanet and Team.

6. Penrose Stairs

In this two dimensional image, the four paths of stairs appear to link together so that a climber would go up or down the steps in a continuous loop but never arrive at a higher or lower point.

Remember, Inception!

Christopher Nolan is a genius!


Will add more soon.

Images Source : Bored Panda

Monday, January 12, 2026

What are some great optical illusions?

 The optical illusion at its best.

Hope this amazes you.

1.The Ponzo Illusion: Which Car is the biggest?

They are the IDENTICAL! Take a ruler and measure. I dare you.

The Ponzo illusion is created by our brain judging an object’s size based by its perceived distance. The brain places the car into context with it’s surroundings. The third car is furhter away ( in perspective) so therefore it appears to look larger.

2.Stare at the woman’s nose for about 10 seconds. Then look at a lighter surface, like a wall, and blink rapidly. Her face should now have color!

3. At first glance, these women look very attractive…

Flip the image over and you’ll see something completely demonic!

Why didn’t you see the creepy faces before!? Well, you can blame your brains function dedicated to face recognition and perception. Think about it, we hardly ever run into upside down faces. So it’s hard to spot differences when we do.

4.Are the Horizontal lines Straight or Crooked?

A Great line optical illusion that strategically places black and white tiles to distort your peripheral vision that make the lines appear to be crooked.

5.Check out this park inside Paris, it looks like a gigantic 3D globe…

But it’s actually completely flat.

This is a 3D illusion that uses perspective and carefully planned out design to create the illusion only at a specific vantage point.

6.Tell me what orange circle looks bigger?

What if I told you, they are the same size!

I like to call this the contrast illusion, but it’s better known as the Ebbinghaus illusion. This illusion takes advantage of our perception of relative size. The circle above is surrounded by larger circles, making it seem like it’s smaller than a same sized circle with smaller circles around it.

7.Take a close look at the squares below. The two squares, are actually the same exact color. Don’t believe me? Hold your finger over the crease between the two squares to prove yourself wrong!

This is called the Cornsweet illusion, which takes advantage of the brain’s lateral inhibition that creates more contrast between the two squares when the edges have different colors.

8. If you cross your eyes, you will see a very familiar face. Who do you see?

The above image is a dot illusion of Michael Jackson. At the image becomes smaller. it’s easier to notice the effect.

9.Akiyoshi Kitaoka creates images from geometric shapes that appear to move. Due to how the colors and geometry is set up, the image tricks the brain into thinking that it’s moving when it’s completely motionless.

Here is a more psychedelic illusion using the same principle.

10.This is a pretty cool face illusion! Intersecting two images, a portrait and a profile picture.

Which one are you looking at? The side of front?

11.Are the circles touching? Are they Spirals?

12.Can you believe it that the depth of the lake is 370 ft ?!! A natural optical illusion, Flathead Lake is so clear that it creates the perception that it is very shallow.

13.A 3D room that has been painted to make it look like people are floating on air.

14. Which of these two tables is longer or are they both the same size? Take out a ruler to measure the long side of both tables. The answer may surprise you

15.Look at the image on the left: Does the black line seem to line up with the blue line?

In actuality, the black line is lined up with the red one, as revealed in the image on the right.Named after Johann Poggendorff, a German physicist who first described this illusion in 1860, the Poggendorff illusion reveals how our brains perceive depths and geometric shapes, but the cause of this optical illusion has not yet been adequately explained.