No, brain waves cannot be measured from a distance without the use of specific devices. Brain waves are the electrical impulses generated by the neurons in the brain, and their measurement typically requires specialized equipment such as electroencephalography (EEG) machines.
EEG machines consist of electrodes that are placed on the scalp to detect and record the electrical activity of the brain. These electrodes need to be in direct contact with the scalp in order to pick up the weak electrical signals produced by the brain. The signals are then amplified and recorded by the EEG device.
It is not currently possible to measure brain waves from a distance without using any devices. The technology and equipment used for brain wave measurement are specifically designed to capture and analyze the electrical activity of the brain.