# How much does a memory weigh?

## How much does a memory weigh?

As computer scientist John D. Kubiatowicz from UC Berkeley explains in The New York Times, a stored data byte does actually have a physical weight, albeit a very, very small one – around 1 attogram, which is one-quintillionth of a gram.

Different groups of neurons (nerve cells), responsible for different thoughts or perceptions, drift in and out of action. Memory is the reactivation of a specific group of neurons, formed from persistent changes in the strength of connections between neurons.

### Does your brain get heavier with more knowledge?

In fact, scientists have found that the brain grows more when you learn something new, and less when you practice things you already know. This means that it’s not just how much time and effort you put in to studying math, but whether, when you study, you learn something new and hard.

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Does information weigh anything?

Usually the answer is “no”. Attempts have been made to assess the physical mass of information by estimating the mass of electrons feeding the power-guzzling computers and devices making up the Internet [1], the result being around 50 gram.

## Do memories physically exist?

Originally Answered: Is a memory a physical thing? Yes. Long-term memories are stored as molecular-level physical changes at the connection points (the synapses) between neurons.

Where are memories stored in the brain?

Memories stored long-term are stored in all parts of the brain. Once a memory is stored in the long-term memory, it is there, even though you destroy the part of the brain, that has to do with memory processing. Your long term memory is like the hard drive on your computer. Those are the things you have saved for later.