What was the first drum set ever made? MCCABE: The earliest surviving examples of drums date back to the 6th century B.C. But the drum set as we know it today is only 100 years old. In 1918, the Chicago-based Ludwig Drum Company debuted the Jazz-Er-Up, an all-in-one set with a single-bass drum and pedal, […]
Do we need oxidants?
Do we need oxidants? Oxidation can damage vital molecules in our cells, including DNA and proteins, which are responsible for many body processes. Molecules such as DNA are needed for cells to function properly, so if too many are damaged, the cell can malfunction or die. This is why antioxidants are important. Why are oxidants […]
What is induction conduction and friction when charging an object?
What is induction conduction and friction when charging an object? Friction – the transfer of electrons from one object to the other. Conduction – by having two objects TOUCH each other and transfer electrons from one object to the next. Induction – By inducing electrons to move from one object to the other. What is […]
Do archeologists lick bones?
Do archeologists lick bones? Archaeologists sometimes used to lick artifacts they excavated in the field to determine if they were bone or not. That said, most modern archaeologists do not do either of these things because spit can contaminate artifacts, ruining archaeological information that could be picked up by things like residue analysis. Do people […]
What made Henry Ford a good leader?
What made Henry Ford a good leader? A hard work ethic, commitment, compassion for others, and a desire to improve society were among these leadership qualities. Known for being modest in his attire as well as personal interactions, Ford demonstrated true humility as a leader. What was Henry Ford most known for? Henry Ford (July […]
How can you tell a concave slope on your map?
How can you tell a concave slope on your map? Concave: Contour lines showing a concave slope on a map will be closely spaced at the top of the terrain feature and widely spaced at the bottom. Bushwalkers going up the slope will find the terrain increasingly steep and challenging. What are the 10 terrain […]
Is 1ml and 1 g the same?
Is 1ml and 1 g the same? One milliliter of water has one gram of mass, and weighs one gram in typical situations, including for cooking recipes and math and science problems (unless another stated). There is no need to do any math: the measurement in milliliters and grams are always the same. What is […]
What is the difference between IR and FTIR?
What is the difference between IR and FTIR? FTIR spectrometers have several prominent advantages: (1) The signal-to-noise ratio of spectrum is significantly higher than the previous generation infrared spectrometers. (2) The accuracy of wavenumber is high. Due to these advantages, FTIR Spectrometers have replaced dispersive IR spectrometers. What is the principle of IR spectroscopy? IR […]
What is the new technology in ESEM?
What is the new technology in ESEM? These problems can now be overcome, thanks to the new environmental scanning electron microscope (ESEM), which permits the imaging of wet systems with no prior specimen preparation. Which gas is used in SEM? However, the first images of wet specimens in an SEM were reported by Lane in […]
Why is it important to exercise your cardiovascular and cardiorespiratory systems?
Why is it important to exercise your cardiovascular and cardiorespiratory systems? Improving cardiovascular fitness can reduce your risk of developing heart disease by increasing the efficiency of your heart, lungs, and blood vessels. The easier it is to pump blood through your body, the less taxing it is on your heart. How can you improve […]