shabbir: this setup here represents, or is simulating, a human head.the bottom of the table here that represents the ear, if the phone's touching the ear, and we've got this liquid that simulates the body mass and tissue within our head. and this probe is going in at different parts of our head and measuring radio frequency energy coming out of the mobile phone and how much of that is being absorbed by our body tissue. sean: why do you need to do this test? shabbir: this is the test that mobile phone manufacturer need to do to make sure that radio frequency energy coming out of the phone is meeting the australian government rules and regulations and limits set for those sort of energies. sean: so, in other words, to make sure the phones are safe. shabbir: absolutely, to make sure that the phones are safe to be used by general population. sean: humans are commonly exposed to two types of radiation: ionizing radiation, which includes x-rays, and non-ionizing radiation, which includes the radio frequency emissions from mobile phones or the 5g network. mal