#1305 How are sellotape (Scotch tape), duct tape, stick glue, wood glue, and superglue different?

How are sellotape (Scotch tape), duct tape, stick glue, wood glue, and superglue different? All the types of glue have different chemical components and they are different in the way that they dry. They also stick or don’t stick to different things. Adhesive tape is called sellotape in the UK and Scotch tape in the

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#1303 How do drones hover?

How do drones hover? Drones hover by using a mix of sensors to adjust their rotor blades. The majority of commercially available drones have four sets of rotor blades, one on each corner. This makes them much easier to control at low speeds and much more stable. The military have drones like this, but they

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#1302 What is junk DNA?

What is junk DNA? Junk DNA is DNA that doesn’t seem to do anything. It is not part of our coding DNA. DNA is in the cell nucleus of all of our cells. DNA stands for deoxyribonucleic acid. The deoxyribo part is sugar. The nucleic acid part is a long chain like molecule. Inside the

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