21:
170:
80:
94:
17:
142:
166:
124:
152:
98:
90:
62:
156:
48:
138:
120:
76:
97:
demonstrates to the
Russian Physical and Chemical Society his invention: the
37:
31:
174:
162:
148:
134:
128:
116:
86:
72:
66:
58:
52:
44:
155:, the basis for all modern computers, is first published by
8:
141:, Canadian-born molecular biologist and
7:
169:, South African-born physicist and
123:, American inventor and founder of
28:
1:
81:American Medical Association
107:Communications Workers' Day
95:Alexander Stepanovich Popov
192:
101:receiver. It is known as
18:Portal:History of science
111:Radio and Television Day
51:, German astronomer (b.
151:- The concept for the
22:Selected anniversaries
167:Allan McLeod Cormack
93:, Russian scientist
65:, mathematician (b.
153:integrated circuit
83:(AMA) is founded.
183:
91:Saint Petersburg
63:Alexis Clairault
191:
190:
186:
185:
184:
182:
181:
180:
157:Geoffrey Dummer
49:David Fabricius
26:
25:
24:
12:
11:
5:
189:
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179:
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160:
146:
132:
114:
109:in Russia and
84:
70:
56:
27:
15:
14:
13:
10:
9:
6:
4:
3:
2:
188:
176:
173:laureate (b.
172:
168:
164:
161:
158:
154:
150:
147:
144:
140:
139:Sidney Altman
136:
133:
130:
126:
122:
121:Edwin H. Land
118:
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108:
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96:
92:
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82:
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57:
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41:
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34:
33:
23:
19:
113:in Bulgaria.
110:
106:
102:
77:Philadelphia
36:
30:
29:
171:Nobel Prize
165:- Death of
143:Nobel Prize
137:- Birth of
119:- Birth of
61:- Death of
47:- Death of
103:Radio Day
38:Radio Day
145:laureate
125:Polaroid
20: |
79:, the
99:radio
89:- In
75:- In
32:May 7
16:<
175:1924
163:1998
149:1952
135:1939
129:1991
127:(d.
117:1909
87:1895
73:1847
67:1713
59:1765
53:1564
45:1617
105:or
35::
177:)
159:.
131:)
69:)
55:)
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