This chapter outlines Hopkins’s knowledge of contemporary energy physics as it decisively shapes his distinctive poetry and the metaphysic that undergirds it. The discussion begins with Hopkins’s appreciation of meteorology in his ‘Heraclitean Fire’ sonnet, of the earth’s atmosphere as a vast thermodynamic system. The figure that this poem presents of man as a lonely ‘spark,’ and the pyrotechnics of ‘As kingfishers catch fire,’ ‘The Windhover’ and ‘God’s Grandeur,’ are then glossed through the optical application of the energy concept in spectroscopy. Finally the chapter considers field theory and Clerk Maxwell’s reassessment of the Newtonian principle of force through the energy concept as the distributive principle of stress, tracing Hopkins’s use of this physical concept in his writings on mechanics, nature and most momentously in the definitive formulation of his metaphysic of stress, instress ,and inscape in 1868 and the concurrent advent of his metrical principle of Sprung Rhythm.

This chapter adopts an Anthropocene framework to contextualize Gerard Manley Hopkins. Placing his work within the epoch of human geophysical agency, I argue, affords new perspective on his radical contribution as an ecological witness. It allows us to see that Hopkins’s depictions of natural entities involved an intuition about their embeddedness in larger systems, many inchoately explained by contemporary science; that his representations of non-human nature seldom avoided the ‘anthropos’ (the ‘human’ in Anthropocene), whether as destructive interloper or divinely privileged steward; and that his life and work included moments of prescience about human activity interfering with Earth-system processes. To recontextualize Hopkins thus is to furnish different ways to interpret his work (in wider conceptual networks and deeper time horizons) and to animate that work’s reception (in light of present concerns). It is also to affiliate Hopkins with ecopoets whose formal innovations might be fruitfully juxtaposed with his poetics.

The introductory chapter is a brief recap on the history and origins of wind power, from windmills in ancient times to today’s multi-megawatt turbines. Energy security has arguably been the historic driver for wind power, and it was a primary source of mechanical power until the advent of the Industrial revolution when it was superceded by coal and oil. The first electricity generating wind turbines were built in the late nineteenth centry, and the technology was pursued most vigorously in Denmark, a country with limited energy reserves: the role of this country in creating the modern wind turbine is described. The worldwide energy crisis of the 1970s brought wind power into the frame internationally, and the pivotal role of legislation under President Carter in expanding the market for wind energy in the US and elsewhere is outlined. Since then the rationale for wind power has expanded to include climate change and the technology has grown exponentially in terms of global installation of wind power and the physical size of wind turbines. The chapter concludes by introducing some of the technological steps that have enabled this process, and which are detailed in subsequent chapters.

Chapter 4 extends the aerodynamic discussions of Chapter 3 to show how the rotor net loads (power, thrust, and torque) are developed. The dimensionless power coefficient (Cp) curve is introduced, and the relationship between rotor tip speed ratio and optimum solidity is explained. The variation of thrust loading with wind speed on an ideal pitch-controlled rotor is explained from simple theory, and illustrated with measurements from a full-scale turbine. Equations governing the chord and twist distributions for an optimised blade are given and discussed in the context of some historic blade types, with illustrations. Rotor aerodynamic control is explained with reference to fixed-pitch stall regulation and variable blade pitch (both positive and negative). The influence of blade number is examined, with discussion of the advantages and disadvantages of one-, two-, and three-bladed wind turbines. The method by which annual energy capture is derived from the power curve and wind speed distribution is explained, with example. The chapter concludes with a brief overview of alternative aerodynamic control devices including tip vanes and ailerons, and downwind rotors (with examples).

Can ‘digitalisation’ (the process of running business through procedures that take place in digital format) contribute to the green transition? If so, to what extent? The European Union (EU) has recently embraced the idea of synergically combining climate policies and digitalisation, whereby the digital transformation becomes a key tool to achieve net zero carbon emissions. Arguably, while there are manifold advantages in improving, for instance, energy distribution via smart grids, digitalisation also contributes to greenhouse gas emissions. It is therefore necessary to strike the right balance and understand how to best harness digitalisation to implement the green transition. Notably, it is essential that the EU monitor the impact of digitalisation on the overall energy demand to avoid an excessive increase in energy consumption. Arguably, the EU can profitably couple a holistic embracement of digitalisation as the panacea to climate challenges with a ‘learn-by-doing’ approach, setting a variety of real-world experiments across supply chains to test the viability of its digital policy, in close collaboration with stakeholders.

In June 2020, the German Federal Government adopted its National Hydrogen Strategy (NWS), which was updated in July 2023, viewing green hydrogen as a key to the energy transition. To achieve net greenhouse gas neutrality by 2045, as required by law, the NWS envisages a rapid market ramp-up for hydrogen. This policy is supported by the recent amendment of the Energy Industry Act (EnWG), which introduces provisions for a prompt creation of a so-called hydrogen core network. However, for now, the required infrastructure does not exist. Against that background, this chapter will examine the existing permission regime in Germany for pure hydrogen infrastructure, specifically its transportation via pipelines and its large-scale storage in salt caverns as the best short-term storage option. The analytical focus will be trained on existing legal barriers that stand in the way of accelerating the construction and repurposing of infrastructure to disseminate hydrogen. To secure the planning and approval framework for the rapid expansion of hydrogen infrastructures in Germany, necessary adjustments to the current legal framework are proposed.

What happens when we read the Irish literary canon for energy? We find numerous mentions of wind power, solar power, petrol, coal, peat, gas, and dung, and we find these energy resources and infrastructures trellised into plot lines and character arcs in some unexpected ways in Irish literature, from Joyce and Beckett to Heaney and McCormack. What emerges is a partial but suggestive cognitive map – of Irish energy economies, ecologies, and phenomenologies – that reveals Ireland’s unique energy signature and at the same time links Ireland to other imperial and global regimes of petromodernity.

In 1996, along the Yangtze River in Zigui 秭归, Hubei Province, the villagers of Guilin were in the middle of packing their belongings. Their friends and relatives were helping them to remove tiles, doors, and windows from the soon to be deluged homes. Down the hill, people were loading farm tools, furniture, and other essentials onto boats anchored along the river’s banks. Amid the din of firecrackers and farewells from their fellow villagers, the first group of Three Gorges migrants set off for their government-designated places of resettlement. Because of the low-altitude location of their residence, Zhang Bing’ai 张秉爱, together with her disabled husband, and two children, were supposed to be part of the first group of migrants. For years, thanks to the help of her maternal family, Bing’ai had been able to cope with the burdensome farm work during busy seasons. Therefore, she insisted on staying for “moving up” resettlement, requesting a flat area for residential use at a higher altitude above the state designated displacement line, which was at odds with the government’s resettlement policy. “I am just attached to this land. With land, you can have everything.” Bing’ai refused to cooperate with the government’s resettlement plan, but it was to no avail. Her home, along with what remained of those of her fellow villagers, was soon underwater. Her family ended up living in a temporary hut not far from the rising water.

The distribution and abundance of species is limited by the availability of nutrients and energy. Adding limiting nutrients to an ecosystem can increase the abundance of some species and may have far-reaching effects on ecosystem functioning. Conversion of light energy into chemical energy by photosynthesis is the primary method by which energy enters an ecosystem. Three different processes of carbon fixation have evolved: C3, C4, and CAM. Each process has costs and benefits that are environment-dependent, but scientists are still evaluating these. Heterotrophs get energy by consuming autotrophs and other heterotrophs. Herbivores, carnivores, omnivores, detritivores, and decomposers are the major classifications of heterotrophs and combined with autotrophs make up the organisms within a biological community. There are numerous morphological, physiological, and behavioral adaptations associated with each type of feeding. Species distribution is influenced by how the ratio of nutrients available to species affects their physiological and ecological processes. It is also influenced by the presence of predators and adaptations of prey species that reduce their probability of being eaten. Some defenses may be induced by the presence of predators.

The toolbox for subnuclear physics.

How the Lorentz transformations can be found from basic properties of space-time, independently of electromagnetism, as in the usual presentations. Lorentz-invariance is a common property of all the fundamental interactions.

Clear discussion of the fundamental concepts of energy, momentum and mass; of their relations; and of their transformations between reference systems, in particular the laboratory and centre of mass frames.

The sources of high-energy particles, cosmic rays and the different types of accelerators. The progress of our knowledge is fully linked to the experimental ‘art’ of detector design and development. Detectors are made of matter, solid or liquid, or gaseous. The interactions of charged and neutral high-energy particles with matter are described. The principal types of detector and the principles of their operation are introduced.