Explaining a car on Instagram: "@explainingacar teachers, you something new every day When you press your car key fob against your head, it actually extends the signal range. That’s because your body — especially your head — is mostly made of water, which can help conduct and amplify radio frequencies. By doing this, you’re essentially turning yourself into a larger antenna, helping the key fob signal reach farther. Credits @brain_frz_ig"

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