Shortly afterwards, Heisenberg's colleague Max Born realised that Heisenberg's method of calculating the probabilities for transitions between the different energy levels could best be expressed by using the mathematical concept of matrices.
Tidak lama kemudian, kawan Heisenberg yaitu Max Born menyadari bahwa metode Heisenberg dalam menghitung kemungkinan transisi antara beda tingkat energi dapat dinyatakan dengan menggunakan konsep matematika matriks.