What is the Casimir Effect? The Casimir effect is a small attractive force that acts between two close parallel uncharged conducting plates. It is due to quantum vacuum fluctuations of the electromagnetic field. The effect was predicted by the Dutch physicist Hendrick Casimir in 1948. According to the quantum theory, the vacuum contains virtual particles which are in a continuous state of fluctuation (see physics FAQ article on virtual particles).
1 Mild high blood pressure. 2  Hypothyroidism may slow the heart rate to less than 60 beats per minute, reduce the heart's pumping capacity, and increase the stiffness of blood vessel walls. 3  All of these effects may lead to high blood pressure.
Other Effects: As mentioned above, there do not seem to be organs and tissues that are not affected by thyroid hormones. A few additional, well-documented effects of thyroid hormones include: 1  Cardiovascular system: Thyroid hormones increases heart rate, cardiac contractility and cardiac output.2  They also promote vasodilation, which leads to enhanced blood flow to many organs.ther Effects: As mentioned above, there do not seem to be organs and tissues that are not affected by thyroid hormones. A few additional, well-documented effects of thyroid hormones include: 1  Cardiovascular system: Thyroid hormones increases heart rate, cardiac contractility and cardiac output.