Mister Monday said:
‘The plague is due to contamination from Fetchers, is it not?’ asked Dusk. When Arthur nodded, he continued, ‘Then it is a simple matter. With your permission, I shall conjure a Nightsweeper from Nothing. Taken back to the Realm you once inhabited, it will collect any remnants of contamination in a single night, and return to Nothing with them. That will remove the effect upon both people and place.’
Mister Monday said:
Arthur took it to the window. It became even more restive as he raised the sash.
‘Go on,’ said Arthur softly, opening his palm.
The black horse leaped into the night. Arthur saw it grow as it flew up to the sky. Grow and grow and grow, till its hooves alone were larger than the house. It neighed, and its neigh was like thunder, rattling the windows, shaking the house. It circled high in the air, then dived back down, great gusts of cold wind jetting from its flared nostrils.
The wind blew Arthur back onto the bed. It was cold, but a delicious cold, beautifully brisk. He felt it wake him up completely, sending a jolt through his entire body. It was the breath of pure, excited life, of raw energy, of the simple joy of running as hard as you can.
Arthur rushed back to the window in time to see the Nightsweeper gallop high over the town beyond, its fresh, invigorating breath blowing the leaves from trees, shaking signs and sweeping up anything loose upon the streets. Car alarms came on everywhere it passed, and lights flicked on in waves beneath it.
The Nightsweeper was waking everything . . . and everyone . . . up.
Monday's Dusk summons a nightsweeper, a special plague removing nithling in the shape of a horse, which Arthur uses to cleanse all the plagues. Said Nightsweeper grows so big that its hooves are bigger than Arthur's house. Earlier in the book, Arthur's house is given a size of four levels tall.
Mister Monday said:
Their house was brand-new, notionally finished a few months before. There were still plumbers and electricians coming back every few weeks to fine-tune various bits and pieces. It had been designed by a famous architect and was on four levels, cut into the hill. The bottom level was the biggest, with garage, workshop, Bob’s studio, and Emily’s home office. The next level was all living spaces and kitchen. The next was bedrooms and bathrooms: Bob and Emily’s and two guest rooms. The top level was the smallest and had bedrooms for Michaeli, Eric, and Arthur, and one bathroom that they either fought over or were locked out of and had to go downstairs.
The average height of a floor is 2.4m (it can be higher, but we'll be using that for now).
http://anewhouse.com.au/2012/01/room-height/ Most builders will normally provide a 2.4m ceiling height as standard. However there are a lot of people who are willing to pay extra for a 2.55m 2.7m, or even 3m ceilings.
H = 2.4m X 4
= 9.6m
Next we need the centre of gravity for a horse.
https://horseandriderbooks.wordpres...his-center-of-energy-and-control-an-exercise/ The horse's center of gravity is the balance point of his body, and it is located in the girth area. His center of control and energy, however, is below his spine at the back of his loin, just below the lumbosacral joint.
The site also gives us a cross diagram of a horse with the centre of gravity in focus, so we'll use that for our scaling.
26 pixels = 9.6m
1 pixel = 9.6m/26 = 0.369230769m
0.369230769m X 445 = 164.307692m
0.369230769m X 621 = 229.292308m
Now we figure out the mass of the Nightsweeper using square-law.
The average length of a horse is 8 feet, or 2.4m. The
average mass of a horse is between 300kg to 1000kg, or an average of 650kg. We'll use all three for our low, mid & high ends. We'll find our energy using GPE.
(Low end)
M2 = (H2/H1)^3*M1
= (229.292308/2.4)^3*300
= 261610992kg
E = 164.307692 X 9.807 X 261610992
= 4.21550936e11 joules
= 100.753091778203 tons of TNT
(Mid end)
M2 = (H2/H1)^3*M1
= (229.292308/2.4)^3*650
= 566823815kg
E = 164.307692 X 9.807 X 566823815
= 9.1336036e11 joules
= 218.298365200765 tons of TNT
(High end)
M2 = (H2/H1)^3*M1
= (229.292308/2.4)^3*1000
= 872036639kg
E = 164.307692 X 9.807 X 872036639
= 1.40516979e12 joules
= 335.8436400573614 tons of TNT
Final Results
Nightsweeper's gravitational pull energy (low end) = 100.753 tons of TNT
Nightsweeper's gravitational pull energy (mid end) = 218.298 tons of TNT
Nightsweeper's gravitational pull energy (high end) = 335.844 tons of TNT Keep in mind too, this is the energy of the Nightsweeper standing still.
