but far more important smoked and preserved now man no longer had no gordon so as soon as he made a fresh kill now he could sustain herself between and he could in time and the art of cooking made him civilized yet for the past forty thousand years of human history methods of cooking have remained the same but now at last in the age of space and in fact as part of a follow on great technological effort there are new ways of preparing food freezing to preserve them and cooking without the application of heat to see how primitive man  we need only travel to the jungles of new guinea where the stone age still survives here the simplest way of preparing food is to take a fresh kill and dump it in the fire but by far the best method of primitive cooking is to  greenery and fill it with raw meat and plenty of hot stone this is the same method as in the new england clambake the western barbeque and the why only one finally the raw meat and hot rocks are sealed with palm frond then pasteboard will be hours before this bank but will be ready it also took a long time about four thousand years from the end of the stone age to the rise of ancient rome yet this roman baker whose portrait and that of his wife is preserved on the walls of his pomp in bakery though he had learned to raise his auburn above the ground and build it of bricks still baked very much like stone age men applying a great deal of  time to achieve this loaf of bread which is no two thousand years old seventeenth centuries after the death of the roman baker thomas jefferson in writing the declaration of independence articulated great political ideas freedom jefferson was a universal genius was design of the university of virginia and his own house modest elo reflected his love of classical design gracious living jefferson was the first american woman it was jefferson who introduced her getting into the american diet as well as such food as french fries asparagus ice cream and vanilla flavor some of the finest meals ever served in america were prepared in jefferson's kitchen yet though jefferson's political ideas were a tremendous advance of the injured roman his food preparation methods were virtually the same involving the same huge applications of labor heat and time with the same inevitable shrinkage and drying out a vote even the arrival of the iron horse the industrial revolution did not substantially change methods of food preparation as can be seen in this bridge in your city nevada on built a century ago and still preserved in its original functional state including its get the nineteenth centuries age of iron and steel made cooking by brick hard obsolete relatively cheap and efficient iron ranges could be readily installed in the most modest pioneer cabin or city dwellers apart yet without convenience food cooking still involved as much time and heat and almost as much effort as in the stone age and even the modern of using either gas or electricity for its heat source despite all its conveniences such as electric timer and automatic pilot said in this twentieth century demonstration kitchen still requires as much heat and time for proper cooking as the bricks a now at this history making moment in which man has first landed on the moon we are entering a new era in space and here at the nasa manned spacecraft center where the lunar explorers will spend their twenty one day isolation period the nasa lunar receiving laboratory contains not only the most advanced scientific the syllabus and comfortable living accommodations but it's kitchen with its reliance on modern frozen foods and microwave and quartz cooking unit is in the forefront a new era in food preparation microwave cooking and like those in the nasa lunar receiving laboratory and this test kitchen are indeed revolutionary keep your eye on the chocolate c faster than you can eat it for a main course about a delicacy like lobster tail ready in less than a minute with no shrinkage or shriveling since there is no furnace like blast of heat this is cooking heating of previously prepared busy particularly frozen food the modern miracle of quartz and microwave ovens are here coupled with the advances made in modern frozen food technology the foods consumed in the nasa lunar receiving laboratory are the results of extensive recipe development and research during the past two years in ultra modern test kit these foods meet or exceed the high standards of quality and purity set by the short for those like the astronauts in the lunar receiving laboratory who must have quality food prepared at maximum speed there is now the perfect marriage as in this demonstration kitchen between the freezer and the microwave and  such frozen food and soups that dribbles and these are a scallop that will be piping hot then ready to serve in a few seconds delicious entrees like lobster newberg quickly heated to and desserts frozen solid like swiss chocolate cake thawed and ready to eat in five seconds it is indeed appropriate that the nasa lunar receiving laboratory is equipped with frozen food facilities watson microwave cooking your microwave cooking especially is part of the technological follow up particularly in the field of radar from the past two decades of research and development which has culminated in nine hundred sixty nine landing on the moon developed as the basic power unit for all these radar tracking stations is an electron to the magnetron and it was discovered that this same magnitude on could be used as the primary power unit in microwave o n magnetron in short is an electron tube which transmits microwaves which are much like radio and television way but a t v station transmits microwaves at the selected frequency in all directions and any t v set tuned to that stations frequency takes up part of the transmitted energy and processes it into sound and pictures inside a microwave oven magnetron similarly transmits waves of energy but since microwaves cannot penetrate metal they are channeled inside a metal pipe down into the oven cavity since the cavity is also all by metal there is no place for the microwaves to go into the food because molecular structure absorbs and converts the energy in the form of heat yet the nature of food is such that only the food like this macaroni and cheese becomes hot the metal oben as well as the glass or paper containers which are all on conductors and microwaves remain cool the new era in food preparation features quality frozen foods served with an president speed an some of the astronauts favorite dishes include  not surprisingly many of them are the same as those available at the local supermarket for cooking in conventional kitchen we live in an age of unprecedented technological achievement scientific adventure for benefits to mankind cannot as yet be fully foreseen yet man's greatest adventure maybe more than a monumental landing on the moon it may well be the ever increasing acquisition of techniques and not