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...data in Table 1 are for a model on a scale of 1 cm to 5000 km. How much bigger is the real Solar System than the model? One metre is 100 centimetres, and 1 kilometre is 1000 metres, so there are one hundred thousand centimetres in a kilometre (i.e. 1 km = 100 000 cm). In 5000 kilometres there are five hundred thousand thousand centimetres - in other words five hundred...

...data in the other. Interestingly, Americans refer to the imperial system as 'English units'. Not every engineering decision about a length needs to be based on an actual measurement. Most of Blanc's gauges for the parts of the M1777 musket lock were of the 'go/no go' type. A particular pin, for example, had to be small enough to enter one gauge hole but big enough not to...

...data from a large number of angles, a computer reconstruction can produce a two-dimensional map of the tissues in a slice of the body. RADIOGRAPHER: So what we’re going to do now is choose the protocols that we’re going to use to do the head. So we’re going to click on the appropriate part of the body here. So we click on ‘head’. And we’re going to do an adult...

...analysis, the polarising microscope remains the prime tool for the study of rock thin sections and is the foundation of learning to recognise, characterise and identify rocks...In this free course, An introduction to minerals and rocks under the microscope, you will experience the study of minerals using a polarising microscope. While the study of minerals can involve...

...analysis of slides for diagnostic histopathology. These steps will be described in more detail later in the course. Please note that this video is around 17 minutes long, so you may prefer to watch it in stages. DAVID MALE Today we're at the histopathology department at Milton Keynes hospital. And I want to introduce you to Peter Mooney, who's the laboratory manager here....