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How long is a piece of string? Physics Uncovered

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Newcastle PARTNERS

on 28 November 2017

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Transcript of How long is a piece of string? Physics Uncovered

H
2
How long is a piece of string?
Physics
Physics is often described as the study of the really big or the really small

Quantum physics investigates the smallest blocks of matter whereas astrophysics explores the universe

In quantum physics the particles are so small that they can't be seen and in astrophysics things can't be seen as they are so far away
You'll each be given a pack of 20 different things and your task is to order these cards from the smallest to biggest things

Then try to match up the size cards to each
thing. Work in groups of 4!

Each of pack contains a one metre long
piece of string to help you keep your sense
of distance and scale
Task
How big is earth?
If the planets in solar system were items of food then how big do you think earth would be if Jupiter (the biggest planet in our solar system) were a watermelon
Light years
Space is so big that they had to find a better way to measure its size


Albert Einstein came up with an extremely useful equation to help us with this
How are particles detected if we can't see them?
This equation shows how mass can be converted into energy

The energy of particles is measured to identify them


How are particles detected if we can't see them?
The tricky part about this strategy is that physicist must first know how much energy they are looking for to be able to identify a particle
You can study a degree in physics or you can take a degree in theoretical physics
Studying Physics
The physics degree uses both theoretical physics and experimental physics to give a sound overall knowledge of physics


The theoretical physics degree uses advanced mathematics to understand the fundamental pillars behind physics

Voted Britain's favourite city
Why Newcastle?
Guardian Reader's Travel Award 2014
A member of the Russell Group
3rd in the UK for quality of staff and lecturers
The Times Higher Education Student Experience Survey 2015
Newcastle social life is rated the best in the UK by students
The Times Higher Education Student Experience Survey 2014/2015
82% graduate level jobs
Destination of leavers of higher education survey 2014/15
Top 20 'Most Targeted' university by UK employers
The Graduate Market, report from High Fliers Research, 2012-16
How far apart is our solar system
I need 9 volunteers to be our solar system:

1) Mercury
2) Venus
3) Earth
4) Mars
5) Jupiter
6) Saturn
7) Uranus
8) Neptune
9) The Sun
Why is Mars our closest planet if Earth's and Venus's average orbits are closer?
Mars has what is known as an eccentric orbit.
This means it orbits in an oval rather than a circle around the sun

At certain points in the orbit
mars will be earths nearest planet

This means we could only launch a
mission to mars at certain points
in the orbit.

How long do you think it would take
to fly to Mars?

260 Days!
More Information
blogs.ncl.ac.uk/stem
What is STEM?
Science
Technology
Engineering
Maths
One light year is approximately 9 trillion kilometers

It is the distance light travels in one year


Bear in mind that light travels at a speed of
300 million metres every second

There are 31,536,000 seconds in a year
STEM Newcastle
1.7 metres
30 metres
830 metres
8850 metres
3,474,800 metres
(3,474km)
12742000m
(12,742km)
6,779,000m
6,779km)
139,822,000m
(139,822km)
9,090,000,000,000m
(9 billion km)
1,000,000,000,000,000,000,000m
(100,000 light years)
0.01m
1cm
0.0001m
(0.1millimetres)
0.00001m
10 micrometres
0.0000001m
(100 nanometres)
0.00000001 m
(10 nanometres)
0.000000001m
(1 nanometre)
0.0000000001m
(0.1 nanometre)
0.0000000001m
(0.1 nanometre)
0.00000000000001m
(100 femtometres)
300,000,000 metres per second x 31,536,000 seconds = 9,460,800,000,000,000 metres
= 9,460,800,000,000 km
= one light year
Energy
Mass
Speed of light (3x10^8)
Imagine if you close your eyes and someone put's 2 balls in your hand. One is a tennis ball and the other is a hockey ball. You'd be able to identify them based on weight. Particle physics works in the same way!
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