Why do shoelaces untie themselves and earphone cables tie themselves up?


Why do shoelaces untie themselves and earphone cables tie themselves up? And if that’s the case, can’t we just interchange them?

It actually because of Entropy [Entropy (order and disorder)] i.e.; Systems always tend to move to a state of higher disorder for more stability. Means with an average length of a earphone, there is a 50% chance that it will knot in your pocket or bag.

As per scientific studies it was concluded that the longer your cable, the higher the chances of it knotting, due to the face that ‘system’ in case of shorter cords will relatively less tends to instability. 


Though few factors will act as a catalyst such as,

for shoelaces, they are slick and/or round in shape. Round polyester or nylon laces are the slickest and hardest to keep tied. But it also depends on the whipping motion created while walking or the hems of your trousers / pants brushing against them etc.

for earphones, (or any bunch of long, flexible objects), as per knot theory, the linking in a number of places, with enough contact points, increases the chances for these objects getting into one of those ‘knot’ states or the more contact points, the more possible knotted states will exist.

Conclusion: Hence as per entropy and knot theory, a cord lesser than 50 cm would almost never tangle itself. But if the length goes beyond that, the probability shoots up till it gets flattened at 2 meters.

As a solution, you can use ‘untangle’ earphones or fabric cord earphones (like this one) which are a little costlier though. And for shoelaces, just google for reef knot, which is way stronger than the usual granny knot 🙂




Why a chocolate bar can kill your Dog ?


Dogs are known for eating things when they are not supposed to, especially when they are young as puppies and love to explore and chew around any likable thing in proximity. But few of the common human foods may prove fatal.


Like one of our favorites, ‘the Chocolate’,  which is derived from the roasted seeds of Theobroma cacao, which contains two toxic ingredients to your dog: caffeine and theobromine.

As humans, we can easily metabolize theobromine in controlled dosage, but canines such as dogs and cats, process it much slowly, allowing it to build up to toxic levels in their system.


In other words, for a 70 kg adult human, you’d have to eat >7 kgs of dark chocolate to get close to lethal level. But a small dog will get sick and potentially die from just one bar of dark chocolate. Here’s a calculator  which you can refer to: Chocolate Toxicity Meter | petMD .

And not only chocolates but even grapes, raisins, coffee, caffeine, Xylitol (artificial sweetener), Onions, garlic, Alcohol, Macadamia nuts etc. falls into this category for them.

What should I do if my dog has eaten chocolate?


If you find out that somehow your dog ate chocolate, urgent treatment might be needed depending on the dosage. So do not panic and contact your vet (keep it on speed-dial) as soon as possible for advice.

Meanwhile check for symptoms like vomiting, diarrhea, increased body temperature, rapid breathing etc, which you can brief along with type of chocolate and its dosage.

Hence to be safe, it’s best not to give them any.


What’s that ‘click’ sound in my camera?


Ever wondered what’s that ‘click’ sound every time you snap a picture via your DSLR ?

Its because your camera has shutter, and the electro-mechanical mechanism that moves and stops the action of the camera’s shutter makes that ‘click’ sound. Though most mechanisms make some sound because of the friction and the impact of a sudden start and stop.


Ok, so why smartphones and similar devices have that sound, do they also have shutter ?

No. People generally prefer a sound cue to know when the photo is done. Hence phones have that ‘click’ sound when they take a picture, even though they do not have an actual shutter.

Usually smartphones do not use physical mechanisms while capturing, but instead they just have an electronic charge-coupled devices constantly capturing visual data and ‘freeze‘ that capture to grab a shot. These cameras often have an option to have an artificial ‘shutter sound’ played by a speaker so that the photographer and/or subject know that the photo was captured.


Thus that fake shutter-sound helps your friends know how long they should try their best, and you get your best moments 🙂 .

But it should also be noted that these shutter sounds are not legal in some countries and some places, especially inside holy places, Museums etc. Even in some, they don’t allow using flashes.