11. The half cell has a recess in its back wall, along with a bench. 12. The half cell has a bench. 13. The indicator electrode forms an electrochemical half cell with the interested ions in the test solution. 14. The sensing electrode acts as a platform for electron transfer to or from the reference half cell . 15. The simplest is when the reference electrode is used as a half cell to build an electrochemical cell. 16. In classroom demonstrations, a form of the Daniell cell known as two half cells is often used due to its simplicity. 17. Cave 1 is divided into four parts : a veranda, a middle room, a cell, and a half cell . 18. Towards the back of the middle room, to the left, is the half cell and to the right the cell. 19. It consists of a veranda with a cell and a half cell in its back wall, both entered through the veranda. 20. Copper copper ( II ) sulfate electrode is also used as one of the half cells in the Daniel-Jakobi galvanic cell.