Author: Betsy Maestro Publisher: Harper Collins ISBN: 0060589450 Category : Juvenile Nonfiction Languages : en Pages : 52
Book Description
Travel through time with the maestros as they explore the amazing history of timekeeping! Did you know that there is more than one calendar? While the most commonly used calendar was on the year 2000, the Jewish calendar said it was the year 5760, while the Muslim calendar said 1420 and the Chinese calendar said 4698. Why do these differences exist? How did ancient civilizations keep track of time? When and how were clocks first invented? Find answers to all these questions and more in this incredible trip through history.
Author: Francis J. P. Ebling Publisher: Springer Nature ISBN: 3030556433 Category : Medical Languages : en Pages : 253
Book Description
This book explores how daily and seasonal rhythmicity is generated, how these rhythms are synchronised by our environment, and how they regulate the neuroendocrine systems that impact our physiology and behaviour. The constraints of surviving in a seasonal environment have shaped human evolution and migration, have shaped our societies and cultures, and continue to influence our everyday lives, health and wellbeing. Identifying the mechanisms whereby seasonal rhythmicity is generated and regulates the brain and body is not only important for understanding the natural world and relevant to animal production, it also offers many insights into the human condition. Each chapter is written by an international expert in the field of chronobiology. A historical perspective on how research into photoperiodism and rhythmicity progressed is initially provided, but the main focus of this book is on the remarkable studies in the last few decades that have unravelled the molecular and cellular machinery underpinning circadian and circannual timing. Topics covered include the role of melatonin in communicating seasonal information to the brain and pituitary gland, the neuroanatomical pathways in mammals, birds and fish by which changes in photoperiod reach the hypothalamus, the role of glial cells (tanycytes) and thyroid hormone in seasonal rhythmicity, neuroplasticity across seasons, effects of changing day length on mood, regulation of “clock“ gene expression, and the role of the suprachiasmatic nucleus. This book will appeal to all students and researchers who wish to learn about current and past research on daily and seasonal rhythmicity. This is the tenth volume in the International Neuroendocrine Federation (INF) Masterclass in Neuroendocrinology series (Volumes 1-7 published by Wiley) that aims to illustrate highest standards and encourage the use of the latest technologies in basic and clinical research and hopes to provide inspiration for further exploration into the exciting field of neuroendocrinology.
Author: Harco Willems Publisher: Peeters Publishers ISBN: 9789068317695 Category : Coffin texts Languages : en Pages : 652
Book Description
The coffin published in this book represents a type that had some popularity in southern Upper Egypt in the early Middle Kingdom, but which, despite its extraordinary decoration had not attracted attention so far. The most striking feature of the decoration is that the object friezes - the pictorial rendering of ritual implements usually found on coffin interiors of the period - also include complete ritual scenes, some of which are attested only here. Apart from this, the decoration includes an extensive selection of the religious texts know as the Coffin Texts. The author first studies the archaeological context and dating of the coffin and attempts a reconstruction of the construction procedures from his technical description of the monument. The detailed account of the decoration in the rest of the book interprets the ritual iconography and offers fresh translations and interpretations of the Coffin Texts. A methodological innovation is that he regards the scenes and texts not as individual decoration elements, but as components of an integral composition. The background of this composition is argued to be a view of life in the hereafter in which the deceased is involved in an unending cycle of ritual action which reflects the funerary rituals that were actually performed on earth. On the one hand, these netherworldly rituals aim at bringing the deceased to new life by mummification, on the other the newly regenerated deceased partakes in embalming rituals for gods representing his dead father (Osiris or Atum). These gods, in their turn, effectuate the deceased's regeneration. The entire process results in a cycle of resuscitation in which the afterlife of the deceased and of the 'father gods' are interdependent. The sociological bias of this interpretation, with its emphasis on kinship relations, differs significantly from earlier attempts to explain Egyptian funerary religion.
Author: Martin Jenkins Publisher: ISBN: 9781406323733 Category : Clocks and watches Languages : en Pages : 0
Book Description
What is time? When did we first use it? Does it always work? How do animals tell time? A fun and fascinating look at time from the first calendars and clocks to the digital watches and precise time-keeping methods of today.
Author: Lutz Hüwel Publisher: Morgan & Claypool Publishers ISBN: 1681740966 Category : Science Languages : en Pages : 186
Book Description
Of Clocks and Time takes readers on a five-stop journey through the physics and technology (and occasional bits of applications and history) of timekeeping. On the way, conceptual vistas and qualitative images abound, but since mathematics is spoken everywhere the book visits equations, quantitative relations, and rigorous definitions are offered as well. The expedition begins with a discussion of the rhythms produced by the daily and annual motion of sun, moon, planets, and stars. Centuries worth of observation and thinking culminate in Newton's penetrating theoretical insights since his notion of space and time are still influential today. During the following two legs of the trip, tools are being examined that allow us to measure hours and minutes and then, with ever growing precision, the tiniest fractions of a second. When the pace of travel approaches the ultimate speed limit, the speed of light, time and space exhibit strange and counter-intuitive traits. On this fourth stage of the journey, Einstein is the local tour guide whose special and general theories of relativity explain the behavior of clocks under these circumstances. Finally, the last part of the voyage reverses direction, moving ever deeper into the past to explore how we can tell the age of "things" - including that of the universe itself.
Author: Paul Louis Metzger Publisher: Wipf and Stock Publishers ISBN: 1725258706 Category : Religion Languages : en Pages : 306
Book Description
Various Christian traditions mark their calendars to reflect the biblical and ecclesial narrative and enhance public worship. Such efforts safeguard against secularization’s encroachment in the church’s life. Setting the Spiritual Clock serves as a guide and traveling companion for the liturgical year, which circles the glorious Son as he breaks through the secular eclipse.
Author: Betsy Maestro
Author: Francis J. P. Ebling
Author: Harco Willems
Author: Martin Jenkins
Author: Lutz Hüwel
Author: Bruce Koscielniak
Author: Liz Evers
Author: YCT EXPERT TEAM
Author: YCT Expert Team 
Author: Paul Louis Metzger