Office chairs with an increased seat height are typically referred to as drafting chairs or stools. These chairs are designed for use with drafting tables or standing desks, providing a higher seat position to accommodate the taller height of these work surfaces. Drafting chairs often feature a foot ring or footrest to provide support and comfort for users sitting at elevated heights for extended periods of time. **

The height of a trampoline jump can be increased by using proper jumping techniques, such as bending the knees and using the arms to generate more upward momentum. Additionally, increasing the speed and force of the jump can help propel the body higher into the air. Strengthening the leg muscles and improving overall body coordination can also contribute to higher jumps on a trampoline. Finally, using a trampoline with a higher tension and bounce can also help increase the height of a jump. **

The night-time electricity rate has not increased significantly. In fact, in some regions, there have been efforts to promote the use of electricity during off-peak hours by offering discounted rates at night. This is done to help balance the demand for electricity and reduce strain on the grid during peak hours. Overall, the night-time electricity rate has remained relatively stable or even decreased in some cases. **

Invisible light does not have a specific color because it is not within the visible spectrum of light that the human eye can perceive. Invisible light includes ultraviolet, infrared, and other forms of electromagnetic radiation that are not visible to the naked eye. While we cannot see these forms of light, they play important roles in various natural processes and technologies. **

Invisible work refers to the labor and effort that goes unrecognized or undervalued in society. This can include tasks such as emotional labor, caregiving, household management, and other responsibilities that are often performed by women and marginalized groups. Invisible work is not typically compensated or acknowledged, and it can contribute to inequalities in the workplace and at home. Recognizing and valuing invisible work is important for achieving gender equality and social justice. **

Invisible fire is a type of fire that does not produce a visible flame, but can still be extremely dangerous. It occurs when a fuel source, such as natural gas or alcohol, burns without producing a visible flame. This can happen when the fuel is not getting enough oxygen to produce a visible flame, or when the fire is burning at a very high temperature. Invisible fire can still produce heat and toxic gases, posing a serious risk of burns and asphyxiation. It is important to be aware of the potential for invisible fire and take precautions to prevent it, such as ensuring proper ventilation and using fuel sources safely. **

Light is invisible on its path because it travels in a straight line and does not scatter or reflect off of particles in the air. This means that we can only see light when it interacts with an object and is either absorbed or reflected back towards our eyes. In the absence of any objects to interact with, light remains invisible as it travels through space. **

As of my last update, there are no plans to increase the short-time work allowance to 80%. The percentage of the allowance may vary depending on the country and its specific regulations. It is recommended to check with the relevant authorities or official sources for the most up-to-date information on this matter. **