# Happy Valentine's Day!

Happy Valentine's Day to one and all!

This set contains the top picks of the Valentine's Day Themed Content Contest. Hope that gives a kick-start to your celebration of the day! :)

Here are the top 6 picks:

If you are looking for more, check out the note at the end of the set.

I thank you all for these wonderful submissions. And lastly, I thank my sweetheart for making the day special!

P. S.: I can't resist the temptation of sharing a recoloring of my avatar in this note to celebrate this occasion:

Code:

 1 2 3 4 5 6 def f(z):  x = real(z)   y = imaginary(z)   return (x^2 + y^2 -1)^3 - x^2*y^3 complex_plot(lambda z: (1/f(z)*i^(z+1)),(-1.5,1.5),(-1.5,1.5),plot_points=300) 

Note by Agnishom Chattopadhyay
3 years, 7 months ago

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NASA photos(mail) -

By Christopher Boo(mail)

Ever Heard of a Building that can Melt A Jaguar Car ?

The 'Walkie-Talkie' building in London's financial district has the infamous reputation of being able to melt parts of cars that are parked nearby. The curve-shaped 'Walkie-Talkie' building has now been dubbed 'Walkie-Scorchie' after it caused £950 of damage to a high-spec Jaguar parked nearby.

Architectural enthusiasts on seeing this image of the building would now have noticed the parabolic and reflective nature of the building. The whole blunder is caused by those aspects of the building.

How does it happen?

The parabolic nature of the building allows for sunlight to be reflected from the mirrored panels used on the building. The tall and irregular-shaped building faces in such a way that sunlight bounces off of it and heads toward the ground, nearby buildings, and vehicles.

The intense rays are given off for two hours a day when the sun reaches a certain position in the sky, managing to warp the panels and side view mirrors on the cars parked within the focal length of the concave mirror-ed building .

The glare is so hot that it warped the side view mirror.

As the sun moves the glare will be at different positions on different buildings in different areas at different times. Therefore the problem is bigger than one thinks.

Now as a temporary solution, City of London has agreed to do away with three parking spaces in the direct path of the reflected sunbeams . Architects are trying to create a long-term solution for this blunder.

- 3 years, 7 months ago

- 3 years, 7 months ago

Nice problem, thanks

Staff - 3 years, 7 months ago

thank you and happy valentine day for all.

- 3 years, 7 months ago

Wont it be easier to do this in polar co-ordoninates. r=2a(1+cos theta) for theta in [-pi,pi] . Then make x=r cos theta and y= r sin theta

- 3 years, 7 months ago

It does not produce that nice an image. Compare your polar plot with mine!

Staff - 3 years, 7 months ago

The equation isnt fit in matlab...guide me/

- 3 years, 7 months ago

It is not matlab code

Staff - 3 years, 7 months ago

Same to you , dude .

- 3 years, 7 months ago

Thanks

Staff - 3 years, 7 months ago